diff --git a/.bazelrc b/.bazelrc
index 433a190..fef1fa3 100644
--- a/.bazelrc
+++ b/.bazelrc
@@ -14,4 +14,4 @@
 test --build_tests_only
 test --test_output=errors
 
-import tools/remote-bazelrc
+import %workspace%/tools/remote-bazelrc
diff --git a/Documentation/cmd-stream-events.txt b/Documentation/cmd-stream-events.txt
index 1ab67d8..e8c5213 100644
--- a/Documentation/cmd-stream-events.txt
+++ b/Documentation/cmd-stream-events.txt
@@ -90,7 +90,7 @@
 eventCreatedOn:: Time in seconds since the UNIX epoch when this event was
 created.
 
-== Change Deleted
+=== Change Deleted
 
 Sent when a change has been deleted.
 
diff --git a/Documentation/config-gerrit.txt b/Documentation/config-gerrit.txt
index 21f7074..00350d1 100644
--- a/Documentation/config-gerrit.txt
+++ b/Documentation/config-gerrit.txt
@@ -1157,17 +1157,6 @@
 +
 Default is true.
 
-[[change.allowDrafts]]change.allowDrafts::
-+
-Legacy support for drafts workflow. If set to true, pushing a new change
-with draft option will create a private change. Pushing with draft option
-to an existing change will create change edit.
-+
-Enabling this option allows to push to the `refs/drafts/branch`. When
-disabled any push to `refs/drafts/branch` will be rejected.
-+
-Default is false.
-
 [[change.api.allowedIdentifier]]change.api.allowedIdentifier::
 +
 Change identifier(s) that are allowed on the API. See
@@ -3061,6 +3050,31 @@
 +
 Not set by default.
 
+[[event]]
+=== Section event
+
+[[event.payload.listChangeOptions]]events.payload.listChangeOptions::
++
+List of options that Gerrit applies when rendering the payload of an
+internal event. This is the same set of options that are documented
+link:rest-api-changes.html#query-options[here].
++
+Depending on the setup, these events might get serialized using stream
+events.
++
+This can be set to the set of minimal options that consumers of Gerrit's
+events need. A minimal set would be (`SKIP_MERGEABLE`,`SKIP_DIFFSTAT`).
++
+Every option that gets added here will have a performance impact. The
+general recommendation is therefore to set this to a minimal set of
+required options.
++
+Defaults to all available options minus `CHANGE_ACTIONS`,
+`CURRENT_ACTIONS` and `CHECK`. This is a rich default to make sure the
+config is backwards compatible with what the default was before the config
+was added.
+
+
 [[ldap]]
 === Section ldap
 
diff --git a/Documentation/config-labels.txt b/Documentation/config-labels.txt
index 9c90ba7..193a96f 100644
--- a/Documentation/config-labels.txt
+++ b/Documentation/config-labels.txt
@@ -262,6 +262,12 @@
 
 Defaults to true.
 
+[[label_copyAnyScore]]
+=== `label.Label-Name.copyAnyScore`
+
+If true, any score for the label is copied forward when a new patch
+set is uploaded. Defaults to false.
+
 [[label_copyMinScore]]
 === `label.Label-Name.copyMinScore`
 
diff --git a/Documentation/dev-community.txt b/Documentation/dev-community.txt
index 9c024d9..a497064 100644
--- a/Documentation/dev-community.txt
+++ b/Documentation/dev-community.txt
@@ -9,6 +9,7 @@
 == Project Information
 
 * link:https://www.gerritcodereview.com/[Project Homepage]
+* link:https://www.gerritcodereview.com/codeofconduct.html[Code of Conduct]
 * link:https://www.gerritcodereview.com/releases-readme.html[Release Versions]
 * link:https://gerrit.googlesource.com/gerrit[Source]
 * link:https://bugs.chromium.org/p/gerrit/issues/list[Issue Tracking]
diff --git a/Documentation/rest-api-changes.txt b/Documentation/rest-api-changes.txt
index 0c2c1ca..6b8281a 100644
--- a/Documentation/rest-api-changes.txt
+++ b/Documentation/rest-api-changes.txt
@@ -2641,6 +2641,14 @@
   HTTP/1.1 204 No Content
 ----
 
+When the change edit is a no-op, for example when providing the same file
+content that the file already has, '409 no changes were made' is returned.
+
+.Response
+----
+  HTTP/1.1 409 no changes were made
+----
+
 [[post-edit]]
 === Restore file content or rename files in Change Edit
 --
@@ -6922,6 +6930,9 @@
 |`notify_details`|optional|
 Additional information about whom to notify about the revert as a map
 of recipient type to link:#notify-info[NotifyInfo] entity.
+|`topic`         |optional|
+Name of the topic for the revert change. If not set, the default is the topic
+of the change being reverted.
 |=============================
 
 [[review-info]]
diff --git a/java/com/google/gerrit/acceptance/BUILD b/java/com/google/gerrit/acceptance/BUILD
index d645828..9b57282 100644
--- a/java/com/google/gerrit/acceptance/BUILD
+++ b/java/com/google/gerrit/acceptance/BUILD
@@ -124,6 +124,7 @@
         "//java/com/google/gerrit/server",
         "//java/com/google/gerrit/server/audit",
         "//java/com/google/gerrit/server/git/receive",
+        "//java/com/google/gerrit/server/logging",
         "//java/com/google/gerrit/server/restapi",
         "//java/com/google/gerrit/server/schema",
         "//java/com/google/gerrit/server/util/git",
diff --git a/java/com/google/gerrit/acceptance/ExtensionRegistry.java b/java/com/google/gerrit/acceptance/ExtensionRegistry.java
new file mode 100644
index 0000000..9b7e455
--- /dev/null
+++ b/java/com/google/gerrit/acceptance/ExtensionRegistry.java
@@ -0,0 +1,187 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.gerrit.acceptance;
+
+import com.google.gerrit.extensions.api.changes.ActionVisitor;
+import com.google.gerrit.extensions.config.DownloadScheme;
+import com.google.gerrit.extensions.events.AccountIndexedListener;
+import com.google.gerrit.extensions.events.ChangeIndexedListener;
+import com.google.gerrit.extensions.events.CommentAddedListener;
+import com.google.gerrit.extensions.events.GitReferenceUpdatedListener;
+import com.google.gerrit.extensions.events.GroupIndexedListener;
+import com.google.gerrit.extensions.events.ProjectIndexedListener;
+import com.google.gerrit.extensions.registration.DynamicMap;
+import com.google.gerrit.extensions.registration.DynamicSet;
+import com.google.gerrit.extensions.registration.PrivateInternals_DynamicMapImpl;
+import com.google.gerrit.extensions.registration.RegistrationHandle;
+import com.google.gerrit.server.ExceptionHook;
+import com.google.gerrit.server.change.ChangeETagComputation;
+import com.google.gerrit.server.git.ChangeMessageModifier;
+import com.google.gerrit.server.git.validators.CommitValidationListener;
+import com.google.gerrit.server.git.validators.RefOperationValidationListener;
+import com.google.gerrit.server.logging.PerformanceLogger;
+import com.google.gerrit.server.rules.SubmitRule;
+import com.google.gerrit.server.validators.ProjectCreationValidationListener;
+import com.google.inject.Inject;
+import com.google.inject.util.Providers;
+import java.util.ArrayList;
+import java.util.List;
+
+public class ExtensionRegistry {
+  private final DynamicSet<AccountIndexedListener> accountIndexedListeners;
+  private final DynamicSet<ChangeIndexedListener> changeIndexedListeners;
+  private final DynamicSet<GroupIndexedListener> groupIndexedListeners;
+  private final DynamicSet<ProjectIndexedListener> projectIndexedListeners;
+  private final DynamicSet<CommitValidationListener> commitValidationListeners;
+  private final DynamicSet<ExceptionHook> exceptionHooks;
+  private final DynamicSet<PerformanceLogger> performanceLoggers;
+  private final DynamicSet<ProjectCreationValidationListener> projectCreationValidationListeners;
+  private final DynamicSet<SubmitRule> submitRules;
+  private final DynamicSet<ChangeMessageModifier> changeMessageModifiers;
+  private final DynamicSet<ChangeETagComputation> changeETagComputations;
+  private final DynamicSet<ActionVisitor> actionVisitors;
+  private final DynamicMap<DownloadScheme> downloadSchemes;
+  private final DynamicSet<RefOperationValidationListener> refOperationValidationListeners;
+  private final DynamicSet<CommentAddedListener> commentAddedListeners;
+  private final DynamicSet<GitReferenceUpdatedListener> refUpdatedListeners;
+
+  @Inject
+  ExtensionRegistry(
+      DynamicSet<AccountIndexedListener> accountIndexedListeners,
+      DynamicSet<ChangeIndexedListener> changeIndexedListeners,
+      DynamicSet<GroupIndexedListener> groupIndexedListeners,
+      DynamicSet<ProjectIndexedListener> projectIndexedListeners,
+      DynamicSet<CommitValidationListener> commitValidationListeners,
+      DynamicSet<ExceptionHook> exceptionHooks,
+      DynamicSet<PerformanceLogger> performanceLoggers,
+      DynamicSet<ProjectCreationValidationListener> projectCreationValidationListeners,
+      DynamicSet<SubmitRule> submitRules,
+      DynamicSet<ChangeMessageModifier> changeMessageModifiers,
+      DynamicSet<ChangeETagComputation> changeETagComputations,
+      DynamicSet<ActionVisitor> actionVisitors,
+      DynamicMap<DownloadScheme> downloadSchemes,
+      DynamicSet<RefOperationValidationListener> refOperationValidationListeners,
+      DynamicSet<CommentAddedListener> commentAddedListeners,
+      DynamicSet<GitReferenceUpdatedListener> refUpdatedListeners) {
+    this.accountIndexedListeners = accountIndexedListeners;
+    this.changeIndexedListeners = changeIndexedListeners;
+    this.groupIndexedListeners = groupIndexedListeners;
+    this.projectIndexedListeners = projectIndexedListeners;
+    this.commitValidationListeners = commitValidationListeners;
+    this.exceptionHooks = exceptionHooks;
+    this.performanceLoggers = performanceLoggers;
+    this.projectCreationValidationListeners = projectCreationValidationListeners;
+    this.submitRules = submitRules;
+    this.changeMessageModifiers = changeMessageModifiers;
+    this.changeETagComputations = changeETagComputations;
+    this.actionVisitors = actionVisitors;
+    this.downloadSchemes = downloadSchemes;
+    this.refOperationValidationListeners = refOperationValidationListeners;
+    this.commentAddedListeners = commentAddedListeners;
+    this.refUpdatedListeners = refUpdatedListeners;
+  }
+
+  public Registration newRegistration() {
+    return new Registration();
+  }
+
+  @SuppressWarnings("FunctionalInterfaceClash")
+  public class Registration implements AutoCloseable {
+    private final List<RegistrationHandle> registrationHandles = new ArrayList<>();
+
+    public Registration add(AccountIndexedListener accountIndexedListener) {
+      return add(accountIndexedListeners, accountIndexedListener);
+    }
+
+    public Registration add(ChangeIndexedListener changeIndexedListener) {
+      return add(changeIndexedListeners, changeIndexedListener);
+    }
+
+    public Registration add(GroupIndexedListener groupIndexedListener) {
+      return add(groupIndexedListeners, groupIndexedListener);
+    }
+
+    public Registration add(ProjectIndexedListener projectIndexedListener) {
+      return add(projectIndexedListeners, projectIndexedListener);
+    }
+
+    public Registration add(CommitValidationListener commitValidationListener) {
+      return add(commitValidationListeners, commitValidationListener);
+    }
+
+    public Registration add(ExceptionHook exceptionHook) {
+      return add(exceptionHooks, exceptionHook);
+    }
+
+    public Registration add(PerformanceLogger performanceLogger) {
+      return add(performanceLoggers, performanceLogger);
+    }
+
+    public Registration add(ProjectCreationValidationListener projectCreationListener) {
+      return add(projectCreationValidationListeners, projectCreationListener);
+    }
+
+    public Registration add(SubmitRule submitRule) {
+      return add(submitRules, submitRule);
+    }
+
+    public Registration add(ChangeMessageModifier changeMessageModifier) {
+      return add(changeMessageModifiers, changeMessageModifier);
+    }
+
+    public Registration add(ChangeETagComputation changeETagComputation) {
+      return add(changeETagComputations, changeETagComputation);
+    }
+
+    public Registration add(ActionVisitor actionVisitor) {
+      return add(actionVisitors, actionVisitor);
+    }
+
+    public Registration add(DownloadScheme downloadScheme, String exportName) {
+      return add(downloadSchemes, downloadScheme, exportName);
+    }
+
+    public Registration add(RefOperationValidationListener refOperationValidationListener) {
+      return add(refOperationValidationListeners, refOperationValidationListener);
+    }
+
+    public Registration add(CommentAddedListener commentAddedListener) {
+      return add(commentAddedListeners, commentAddedListener);
+    }
+
+    public Registration add(GitReferenceUpdatedListener refUpdatedListener) {
+      return add(refUpdatedListeners, refUpdatedListener);
+    }
+
+    private <T> Registration add(DynamicSet<T> dynamicSet, T extension) {
+      RegistrationHandle registrationHandle = dynamicSet.add("gerrit", extension);
+      registrationHandles.add(registrationHandle);
+      return this;
+    }
+
+    private <T> Registration add(DynamicMap<T> dynamicMap, T extension, String exportName) {
+      RegistrationHandle registrationHandle =
+          ((PrivateInternals_DynamicMapImpl<T>) dynamicMap)
+              .put("myPlugin", exportName, Providers.of(extension));
+      registrationHandles.add(registrationHandle);
+      return this;
+    }
+
+    @Override
+    public void close() {
+      registrationHandles.forEach(h -> h.remove());
+    }
+  }
+}
diff --git a/java/com/google/gerrit/acceptance/InProcessProtocol.java b/java/com/google/gerrit/acceptance/InProcessProtocol.java
index 2b6cb00..ae85134 100644
--- a/java/com/google/gerrit/acceptance/InProcessProtocol.java
+++ b/java/com/google/gerrit/acceptance/InProcessProtocol.java
@@ -31,7 +31,6 @@
 import com.google.gerrit.server.RemotePeer;
 import com.google.gerrit.server.RequestCleanup;
 import com.google.gerrit.server.config.GerritRequestModule;
-import com.google.gerrit.server.git.DefaultAdvertiseRefsHook;
 import com.google.gerrit.server.git.PermissionAwareRepositoryManager;
 import com.google.gerrit.server.git.ReceivePackInitializer;
 import com.google.gerrit.server.git.TransferConfig;
@@ -39,7 +38,6 @@
 import com.google.gerrit.server.git.receive.AsyncReceiveCommits;
 import com.google.gerrit.server.git.validators.UploadValidators;
 import com.google.gerrit.server.permissions.PermissionBackend;
-import com.google.gerrit.server.permissions.PermissionBackend.RefFilterOptions;
 import com.google.gerrit.server.permissions.PermissionBackendException;
 import com.google.gerrit.server.permissions.ProjectPermission;
 import com.google.gerrit.server.plugincontext.PluginSetContext;
@@ -252,7 +250,6 @@
       UploadPack up = new UploadPack(permissionAwareRepository);
       up.setPackConfig(transferConfig.getPackConfig());
       up.setTimeout(transferConfig.getTimeout());
-      up.setAdvertiseRefsHook(new DefaultAdvertiseRefsHook(perm, RefFilterOptions.defaults()));
       List<PreUploadHook> hooks = Lists.newArrayList(preUploadHooks);
       hooks.add(
           uploadValidatorsFactory.create(
diff --git a/java/com/google/gerrit/common/data/LabelType.java b/java/com/google/gerrit/common/data/LabelType.java
index 25b8d19..c6cabe2a 100644
--- a/java/com/google/gerrit/common/data/LabelType.java
+++ b/java/com/google/gerrit/common/data/LabelType.java
@@ -34,6 +34,7 @@
   public static final boolean DEF_COPY_ALL_SCORES_IF_NO_CODE_CHANGE = false;
   public static final boolean DEF_COPY_ALL_SCORES_ON_TRIVIAL_REBASE = false;
   public static final boolean DEF_COPY_ALL_SCORES_ON_MERGE_FIRST_PARENT_UPDATE = false;
+  public static final boolean DEF_COPY_ANY_SCORE = false;
   public static final boolean DEF_COPY_MAX_SCORE = false;
   public static final boolean DEF_COPY_MIN_SCORE = false;
   public static final boolean DEF_IGNORE_SELF_APPROVAL = false;
@@ -96,6 +97,7 @@
 
   protected LabelFunction function;
 
+  protected boolean copyAnyScore;
   protected boolean copyMinScore;
   protected boolean copyMaxScore;
   protected boolean copyAllScoresOnMergeFirstParentUpdate;
@@ -139,6 +141,7 @@
     setCopyAllScoresIfNoCodeChange(DEF_COPY_ALL_SCORES_IF_NO_CODE_CHANGE);
     setCopyAllScoresOnTrivialRebase(DEF_COPY_ALL_SCORES_ON_TRIVIAL_REBASE);
     setCopyAllScoresOnMergeFirstParentUpdate(DEF_COPY_ALL_SCORES_ON_MERGE_FIRST_PARENT_UPDATE);
+    setCopyAnyScore(DEF_COPY_ANY_SCORE);
     setCopyMaxScore(DEF_COPY_MAX_SCORE);
     setCopyMinScore(DEF_COPY_MIN_SCORE);
     setAllowPostSubmit(DEF_ALLOW_POST_SUBMIT);
@@ -229,6 +232,14 @@
     this.defaultValue = defaultValue;
   }
 
+  public boolean isCopyAnyScore() {
+    return copyAnyScore;
+  }
+
+  public void setCopyAnyScore(boolean copyAnyScore) {
+    this.copyAnyScore = copyAnyScore;
+  }
+
   public boolean isCopyMinScore() {
     return copyMinScore;
   }
diff --git a/java/com/google/gerrit/extensions/api/changes/RevertInput.java b/java/com/google/gerrit/extensions/api/changes/RevertInput.java
index c1be9b0..c4272e4 100644
--- a/java/com/google/gerrit/extensions/api/changes/RevertInput.java
+++ b/java/com/google/gerrit/extensions/api/changes/RevertInput.java
@@ -24,4 +24,6 @@
   public NotifyHandling notify = NotifyHandling.ALL;
 
   public Map<RecipientType, NotifyInfo> notifyDetails;
+
+  public String topic;
 }
diff --git a/java/com/google/gerrit/extensions/events/ChangeEvent.java b/java/com/google/gerrit/extensions/events/ChangeEvent.java
index 0b51052..def75b7 100644
--- a/java/com/google/gerrit/extensions/events/ChangeEvent.java
+++ b/java/com/google/gerrit/extensions/events/ChangeEvent.java
@@ -20,6 +20,11 @@
 
 /** Interface to be extended by Events with a Change. */
 public interface ChangeEvent extends GerritEvent {
+  /**
+   * Information about the change. Some fields might be null.
+   *
+   * @see com.google.gerrit.server.extensions.events.EventUtil
+   */
   ChangeInfo getChange();
 
   AccountInfo getWho();
diff --git a/java/com/google/gerrit/extensions/events/RevisionEvent.java b/java/com/google/gerrit/extensions/events/RevisionEvent.java
index f0cfa2c..db7830e 100644
--- a/java/com/google/gerrit/extensions/events/RevisionEvent.java
+++ b/java/com/google/gerrit/extensions/events/RevisionEvent.java
@@ -18,5 +18,11 @@
 
 /** Interface to be extended by Events with a Revision. */
 public interface RevisionEvent extends ChangeEvent {
+
+  /**
+   * Information about the revision. Some fields might be null.
+   *
+   * @see com.google.gerrit.server.extensions.events.EventUtil
+   */
   RevisionInfo getRevision();
 }
diff --git a/java/com/google/gerrit/httpd/GitOverHttpServlet.java b/java/com/google/gerrit/httpd/GitOverHttpServlet.java
index 755bf7a..ff2a83d 100644
--- a/java/com/google/gerrit/httpd/GitOverHttpServlet.java
+++ b/java/com/google/gerrit/httpd/GitOverHttpServlet.java
@@ -30,7 +30,6 @@
 import com.google.gerrit.server.RequestListener;
 import com.google.gerrit.server.audit.HttpAuditEvent;
 import com.google.gerrit.server.cache.CacheModule;
-import com.google.gerrit.server.git.DefaultAdvertiseRefsHook;
 import com.google.gerrit.server.git.GitRepositoryManager;
 import com.google.gerrit.server.git.PermissionAwareRepositoryManager;
 import com.google.gerrit.server.git.TransferConfig;
@@ -40,7 +39,6 @@
 import com.google.gerrit.server.group.GroupAuditService;
 import com.google.gerrit.server.logging.TraceContext;
 import com.google.gerrit.server.permissions.PermissionBackend;
-import com.google.gerrit.server.permissions.PermissionBackend.RefFilterOptions;
 import com.google.gerrit.server.permissions.PermissionBackendException;
 import com.google.gerrit.server.permissions.ProjectPermission;
 import com.google.gerrit.server.plugincontext.PluginSetContext;
@@ -55,6 +53,7 @@
 import com.google.inject.name.Named;
 import java.io.IOException;
 import java.time.Duration;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.Map;
@@ -338,6 +337,11 @@
       up.setTimeout(config.getTimeout());
       up.setPreUploadHook(PreUploadHookChain.newChain(Lists.newArrayList(preUploadHooks)));
       up.setPostUploadHook(PostUploadHookChain.newChain(Lists.newArrayList(postUploadHooks)));
+      String header = req.getHeader("Git-Protocol");
+      if (header != null) {
+        String[] params = header.split(":");
+        up.setExtraParameters(Arrays.asList(params));
+      }
       uploadPackInitializers.runEach(initializer -> initializer.init(state.getNameKey(), up));
       return up;
     }
@@ -411,7 +415,6 @@
         up.setPreUploadHook(
             PreUploadHookChain.newChain(
                 Lists.newArrayList(up.getPreUploadHook(), uploadValidators)));
-        up.setAdvertiseRefsHook(new DefaultAdvertiseRefsHook(perm, RefFilterOptions.defaults()));
         next.doFilter(httpRequest, responseWrapper);
       } finally {
         groupAuditService.dispatch(
diff --git a/java/com/google/gerrit/index/IndexConfig.java b/java/com/google/gerrit/index/IndexConfig.java
index 807c78c..29b8ea6 100644
--- a/java/com/google/gerrit/index/IndexConfig.java
+++ b/java/com/google/gerrit/index/IndexConfig.java
@@ -52,7 +52,8 @@
   }
 
   private static void setTypeOrDefault(Config cfg, Consumer<String> setter) {
-    setter.accept(new IndexType(cfg).toString());
+    String type = cfg != null ? cfg.getString("index", null, "type") : null;
+    setter.accept(new IndexType(type).toString());
   }
 
   public static Builder builder() {
diff --git a/java/com/google/gerrit/index/IndexType.java b/java/com/google/gerrit/index/IndexType.java
index 10aa220..a92b734 100644
--- a/java/com/google/gerrit/index/IndexType.java
+++ b/java/com/google/gerrit/index/IndexType.java
@@ -16,8 +16,16 @@
 
 import com.google.common.collect.ImmutableSet;
 import com.google.gerrit.common.Nullable;
-import org.eclipse.jgit.lib.Config;
 
+/**
+ * Index types supported by the secondary index.
+ *
+ * <p>The explicitly known index types are Lucene (the default) and Elasticsearch.
+ *
+ * <p>The third supported index type is any other type String value, deemed as custom. This is for
+ * configuring index types that are internal or not to be disclosed. Supporting custom index types
+ * allows to not break that case upon core implementation changes.
+ */
 public class IndexType {
   private static final String LUCENE = "lucene";
   private static final String ELASTICSEARCH = "elasticsearch";
@@ -28,10 +36,6 @@
     this.type = type == null ? getDefault() : type.toLowerCase();
   }
 
-  public IndexType(@Nullable Config cfg) {
-    this(cfg != null ? cfg.getString("index", null, "type") : null);
-  }
-
   public static String getDefault() {
     return LUCENE;
   }
@@ -49,7 +53,7 @@
   }
 
   public static boolean isElasticsearch(String type) {
-    return type.equals(ELASTICSEARCH);
+    return type.toLowerCase().equals(ELASTICSEARCH);
   }
 
   @Override
diff --git a/java/com/google/gerrit/pgm/Daemon.java b/java/com/google/gerrit/pgm/Daemon.java
index 9cebee4..e6860c2 100644
--- a/java/com/google/gerrit/pgm/Daemon.java
+++ b/java/com/google/gerrit/pgm/Daemon.java
@@ -327,7 +327,7 @@
     }
     cfgInjector = createCfgInjector();
     config = cfgInjector.getInstance(Key.get(Config.class, GerritServerConfig.class));
-    initIndexType();
+    indexType = IndexModule.getIndexType(cfgInjector);
     sysInjector = createSysInjector();
     sysInjector.getInstance(PluginGuiceEnvironment.class).setDbCfgInjector(dbInjector, cfgInjector);
     manager.add(dbInjector, cfgInjector, sysInjector);
@@ -498,13 +498,6 @@
     throw new IllegalStateException("unsupported index.type = " + indexType);
   }
 
-  private void initIndexType() {
-    indexType = IndexModule.getIndexType(cfgInjector);
-    if (!indexType.isLucene() && !indexType.isElasticsearch()) {
-      throw new IllegalStateException("unsupported index.type = " + indexType);
-    }
-  }
-
   private void initSshd() {
     sshInjector = createSshInjector();
     sysInjector.getInstance(PluginGuiceEnvironment.class).setSshInjector(sshInjector);
diff --git a/java/com/google/gerrit/server/ApprovalInference.java b/java/com/google/gerrit/server/ApprovalInference.java
index f5cc956..8d132cd 100644
--- a/java/com/google/gerrit/server/ApprovalInference.java
+++ b/java/com/google/gerrit/server/ApprovalInference.java
@@ -99,6 +99,8 @@
     } else if ((type.isCopyMinScore() && type.isMaxNegative(psa))
         || (type.isCopyMaxScore() && type.isMaxPositive(psa))) {
       return true;
+    } else if (type.isCopyAnyScore()) {
+      return true;
     }
     switch (kind) {
       case MERGE_FIRST_PARENT_UPDATE:
diff --git a/java/com/google/gerrit/server/extensions/events/EventUtil.java b/java/com/google/gerrit/server/extensions/events/EventUtil.java
index 1c4cf4f..933c71a 100644
--- a/java/com/google/gerrit/server/extensions/events/EventUtil.java
+++ b/java/com/google/gerrit/server/extensions/events/EventUtil.java
@@ -16,6 +16,7 @@
 
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Sets;
+import com.google.common.flogger.FluentLogger;
 import com.google.gerrit.extensions.client.ListChangesOption;
 import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.extensions.common.ApprovalInfo;
@@ -29,6 +30,7 @@
 import com.google.gerrit.server.account.AccountState;
 import com.google.gerrit.server.change.ChangeJson;
 import com.google.gerrit.server.change.RevisionJson;
+import com.google.gerrit.server.config.GerritServerConfig;
 import com.google.gerrit.server.patch.PatchListNotAvailableException;
 import com.google.gerrit.server.permissions.PermissionBackendException;
 import com.google.gerrit.server.query.change.ChangeData;
@@ -39,42 +41,51 @@
 import java.util.EnumSet;
 import java.util.HashMap;
 import java.util.Map;
+import org.eclipse.jgit.lib.Config;
 
+/**
+ * Formats change and revision info objects to serve as payload for Gerrit events.
+ *
+ * <p>Uses configurable options ({@code event.payload.listChangeOptions}) to decide which fields to
+ * populate.
+ */
 @Singleton
 public class EventUtil {
-  private static final ImmutableSet<ListChangesOption> CHANGE_OPTIONS;
+  private static final FluentLogger logger = FluentLogger.forEnclosingClass();
+
+  private static final ImmutableSet<ListChangesOption> DEFAULT_CHANGE_OPTIONS;
 
   static {
     EnumSet<ListChangesOption> opts = EnumSet.allOf(ListChangesOption.class);
-
     // Some options, like actions, are expensive to compute because they potentially have to walk
     // lots of history and inspect lots of other changes.
     opts.remove(ListChangesOption.CHANGE_ACTIONS);
     opts.remove(ListChangesOption.CURRENT_ACTIONS);
-
     // CHECK suppresses some exceptions on corrupt changes, which is not appropriate for passing
     // through the event system as we would rather let them propagate.
     opts.remove(ListChangesOption.CHECK);
-
-    CHANGE_OPTIONS = Sets.immutableEnumSet(opts);
+    DEFAULT_CHANGE_OPTIONS = Sets.immutableEnumSet(opts);
   }
 
   private final ChangeData.Factory changeDataFactory;
   private final ChangeJson.Factory changeJsonFactory;
   private final RevisionJson.Factory revisionJsonFactory;
+  private final ImmutableSet<ListChangesOption> changeOptions;
 
   @Inject
   EventUtil(
       ChangeJson.Factory changeJsonFactory,
       RevisionJson.Factory revisionJsonFactory,
-      ChangeData.Factory changeDataFactory) {
+      ChangeData.Factory changeDataFactory,
+      @GerritServerConfig Config gerritConfig) {
     this.changeDataFactory = changeDataFactory;
     this.changeJsonFactory = changeJsonFactory;
     this.revisionJsonFactory = revisionJsonFactory;
+    this.changeOptions = parseChangeListOptions(gerritConfig);
   }
 
   public ChangeInfo changeInfo(Change change) {
-    return changeJsonFactory.create(CHANGE_OPTIONS).format(change);
+    return changeJsonFactory.create(changeOptions).format(change);
   }
 
   public RevisionInfo revisionInfo(Project project, PatchSet ps)
@@ -85,7 +96,7 @@
   public RevisionInfo revisionInfo(Project.NameKey project, PatchSet ps)
       throws PatchListNotAvailableException, GpgException, IOException, PermissionBackendException {
     ChangeData cd = changeDataFactory.create(project, ps.id().changeId());
-    return revisionJsonFactory.create(CHANGE_OPTIONS).getRevisionInfo(cd, ps);
+    return revisionJsonFactory.create(changeOptions).getRevisionInfo(cd, ps);
   }
 
   public AccountInfo accountInfo(AccountState accountState) {
@@ -110,4 +121,21 @@
     }
     return result;
   }
+
+  private static ImmutableSet<ListChangesOption> parseChangeListOptions(Config gerritConfig) {
+    String[] config = gerritConfig.getStringList("event", "payload", "listChangeOptions");
+    if (config.length == 0) {
+      return DEFAULT_CHANGE_OPTIONS;
+    }
+
+    ImmutableSet.Builder<ListChangesOption> result = ImmutableSet.builder();
+    for (String c : config) {
+      try {
+        result.add(ListChangesOption.valueOf(c));
+      } catch (IllegalArgumentException e) {
+        logger.atWarning().withCause(e).log("could not parse list change option %s", c);
+      }
+    }
+    return result.build();
+  }
 }
diff --git a/java/com/google/gerrit/server/git/CommitUtil.java b/java/com/google/gerrit/server/git/CommitUtil.java
index b0f10f2..f2f7dc4 100644
--- a/java/com/google/gerrit/server/git/CommitUtil.java
+++ b/java/com/google/gerrit/server/git/CommitUtil.java
@@ -14,16 +14,49 @@
 
 package com.google.gerrit.server.git;
 
+import com.google.common.base.Strings;
 import com.google.gerrit.common.Nullable;
 import com.google.gerrit.extensions.common.CommitInfo;
+import com.google.gerrit.extensions.restapi.ResourceConflictException;
+import com.google.gerrit.reviewdb.client.Change;
+import com.google.gerrit.reviewdb.client.PatchSet;
+import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.server.CommonConverters;
+import com.google.gerrit.server.CurrentUser;
+import com.google.gerrit.server.GerritPersonIdent;
+import com.google.gerrit.server.change.ChangeMessages;
+import com.google.gerrit.server.notedb.ChangeNotes;
+import com.google.gerrit.server.util.time.TimeUtil;
+import com.google.inject.Inject;
+import com.google.inject.Provider;
+import com.google.inject.Singleton;
 import java.io.IOException;
+import java.sql.Timestamp;
+import java.text.MessageFormat;
 import java.util.ArrayList;
+import org.eclipse.jgit.lib.CommitBuilder;
+import org.eclipse.jgit.lib.ObjectId;
+import org.eclipse.jgit.lib.ObjectInserter;
+import org.eclipse.jgit.lib.ObjectReader;
+import org.eclipse.jgit.lib.PersonIdent;
+import org.eclipse.jgit.lib.Repository;
 import org.eclipse.jgit.revwalk.RevCommit;
 import org.eclipse.jgit.revwalk.RevWalk;
+import org.eclipse.jgit.util.ChangeIdUtil;
 
 /** Static utilities for working with {@link RevCommit}s. */
+@Singleton
 public class CommitUtil {
+  private final GitRepositoryManager repoManager;
+  private final Provider<PersonIdent> serverIdent;
+
+  @Inject
+  CommitUtil(
+      GitRepositoryManager repoManager, @GerritPersonIdent Provider<PersonIdent> serverIdent) {
+    this.repoManager = repoManager;
+    this.serverIdent = serverIdent;
+  }
+
   public static CommitInfo toCommitInfo(RevCommit commit) throws IOException {
     return toCommitInfo(commit, null);
   }
@@ -47,5 +80,84 @@
     return info;
   }
 
-  private CommitUtil() {}
+  /**
+   * Allows creating a revert commit.
+   *
+   * @param message Commit message for the revert commit.
+   * @param notes ChangeNotes of the change being reverted.
+   * @param user Current User performing the revert.
+   * @return ObjectId that represents the newly created commit.
+   * @throws ResourceConflictException Can't revert the initial commit.
+   * @throws IOException Thrown in case of I/O errors.
+   */
+  public ObjectId createRevertCommit(String message, ChangeNotes notes, CurrentUser user)
+      throws ResourceConflictException, IOException {
+    message = Strings.emptyToNull(message);
+
+    Project.NameKey project = notes.getProjectName();
+    try (Repository git = repoManager.openRepository(project);
+        ObjectInserter oi = git.newObjectInserter();
+        ObjectReader reader = oi.newReader();
+        RevWalk revWalk = new RevWalk(reader)) {
+      return createRevertCommit(message, notes, user, null, TimeUtil.nowTs(), oi, revWalk);
+    }
+  }
+
+  /**
+   * @param message Commit message for the revert commit.
+   * @param notes ChangeNotes of the change being reverted.
+   * @param user Current User performing the revert.
+   * @param generatedChangeId The changeId for the commit message, can be null since it is not
+   *     needed for commits, only for changes.
+   * @param ts Timestamp of creation for the commit.
+   * @param oi ObjectInserter for inserting the newly created commit.
+   * @param revWalk Used for parsing the original commit.
+   * @return ObjectId that represents the newly created commit.
+   * @throws ResourceConflictException Can't revert the initial commit.
+   * @throws IOException Thrown in case of I/O errors.
+   */
+  public ObjectId createRevertCommit(
+      String message,
+      ChangeNotes notes,
+      CurrentUser user,
+      @Nullable ObjectId generatedChangeId,
+      Timestamp ts,
+      ObjectInserter oi,
+      RevWalk revWalk)
+      throws ResourceConflictException, IOException {
+
+    PatchSet patch = notes.getCurrentPatchSet();
+    RevCommit commitToRevert = revWalk.parseCommit(patch.commitId());
+    if (commitToRevert.getParentCount() == 0) {
+      throw new ResourceConflictException("Cannot revert initial commit");
+    }
+
+    PersonIdent committerIdent = serverIdent.get();
+    PersonIdent authorIdent =
+        user.asIdentifiedUser().newCommitterIdent(ts, committerIdent.getTimeZone());
+
+    RevCommit parentToCommitToRevert = commitToRevert.getParent(0);
+    revWalk.parseHeaders(parentToCommitToRevert);
+
+    CommitBuilder revertCommitBuilder = new CommitBuilder();
+    revertCommitBuilder.addParentId(commitToRevert);
+    revertCommitBuilder.setTreeId(parentToCommitToRevert.getTree());
+    revertCommitBuilder.setAuthor(authorIdent);
+    revertCommitBuilder.setCommitter(authorIdent);
+
+    Change changeToRevert = notes.getChange();
+    if (message == null) {
+      message =
+          MessageFormat.format(
+              ChangeMessages.get().revertChangeDefaultMessage,
+              changeToRevert.getSubject(),
+              patch.commitId().name());
+    }
+    if (generatedChangeId != null) {
+      revertCommitBuilder.setMessage(ChangeIdUtil.insertId(message, generatedChangeId, true));
+    }
+    ObjectId id = oi.insert(revertCommitBuilder);
+    oi.flush();
+    return id;
+  }
 }
diff --git a/java/com/google/gerrit/server/git/DefaultAdvertiseRefsHook.java b/java/com/google/gerrit/server/git/DefaultAdvertiseRefsHook.java
deleted file mode 100644
index d1a6df6..0000000
--- a/java/com/google/gerrit/server/git/DefaultAdvertiseRefsHook.java
+++ /dev/null
@@ -1,62 +0,0 @@
-// Copyright (C) 2018 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package com.google.gerrit.server.git;
-
-import com.google.common.collect.ImmutableList;
-import com.google.common.flogger.FluentLogger;
-import com.google.gerrit.server.permissions.PermissionBackend;
-import com.google.gerrit.server.permissions.PermissionBackendException;
-import java.io.IOException;
-import java.util.List;
-import java.util.Map;
-import org.eclipse.jgit.lib.Ref;
-import org.eclipse.jgit.lib.RefDatabase;
-import org.eclipse.jgit.lib.Repository;
-import org.eclipse.jgit.revwalk.RevWalk;
-import org.eclipse.jgit.transport.AbstractAdvertiseRefsHook;
-import org.eclipse.jgit.transport.ServiceMayNotContinueException;
-
-/**
- * Wrapper around {@link com.google.gerrit.server.permissions.PermissionBackend.ForProject} that
- * implements {@link org.eclipse.jgit.transport.AdvertiseRefsHook}.
- */
-public class DefaultAdvertiseRefsHook extends AbstractAdvertiseRefsHook {
-  private static final FluentLogger logger = FluentLogger.forEnclosingClass();
-
-  private final PermissionBackend.ForProject perm;
-  private final PermissionBackend.RefFilterOptions opts;
-
-  public DefaultAdvertiseRefsHook(
-      PermissionBackend.ForProject perm, PermissionBackend.RefFilterOptions opts) {
-    this.perm = perm;
-    this.opts = opts;
-  }
-
-  @Override
-  protected Map<String, Ref> getAdvertisedRefs(Repository repo, RevWalk revWalk)
-      throws ServiceMayNotContinueException {
-    logger.atFine().log("ref filter options = %s", opts);
-    try {
-      List<String> prefixes =
-          !opts.prefixes().isEmpty() ? opts.prefixes() : ImmutableList.of(RefDatabase.ALL);
-      return perm.filter(
-          repo.getRefDatabase().getRefsByPrefix(prefixes.toArray(new String[0])), repo, opts);
-    } catch (IOException | PermissionBackendException e) {
-      ServiceMayNotContinueException ex = new ServiceMayNotContinueException();
-      ex.initCause(e);
-      throw ex;
-    }
-  }
-}
diff --git a/java/com/google/gerrit/server/git/receive/AsyncReceiveCommits.java b/java/com/google/gerrit/server/git/receive/AsyncReceiveCommits.java
index a644b52..95ce8a1 100644
--- a/java/com/google/gerrit/server/git/receive/AsyncReceiveCommits.java
+++ b/java/com/google/gerrit/server/git/receive/AsyncReceiveCommits.java
@@ -286,6 +286,7 @@
     // Check objects mentioned inside the incoming pack file are reachable from visible refs.
     Project.NameKey projectName = projectState.getNameKey();
     this.perm = permissionBackend.user(user).project(projectName);
+
     receivePack = new ReceivePack(PermissionAwareRepositoryManager.wrap(repo, perm));
     receivePack.setAllowCreates(true);
     receivePack.setAllowDeletes(true);
@@ -309,8 +310,7 @@
 
     allRefsWatcher = new AllRefsWatcher();
     receivePack.setAdvertiseRefsHook(
-        ReceiveCommitsAdvertiseRefsHookChain.create(
-            allRefsWatcher, perm, queryProvider, projectName));
+        ReceiveCommitsAdvertiseRefsHookChain.create(allRefsWatcher, queryProvider, projectName));
     resultChangeIds = new ResultChangeIds();
     receiveCommits =
         factory.create(
diff --git a/java/com/google/gerrit/server/git/receive/ReceiveCommits.java b/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
index e991318..ef782d1 100644
--- a/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
+++ b/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
@@ -47,6 +47,7 @@
 import com.google.common.collect.BiMap;
 import com.google.common.collect.HashBiMap;
 import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.ImmutableSetMultimap;
 import com.google.common.collect.Iterables;
@@ -238,9 +239,6 @@
 class ReceiveCommits {
   private static final FluentLogger logger = FluentLogger.forEnclosingClass();
 
-  private static final String CODE_REVIEW_ERROR =
-      "You need 'Push' rights to upload code review requests.\n"
-          + "Verify that you are pushing to the right branch.";
   private static final String CANNOT_DELETE_CHANGES = "Cannot delete from '" + REFS_CHANGES + "'";
   private static final String CANNOT_DELETE_CONFIG =
       "Cannot delete project configuration from '" + RefNames.REFS_CONFIG + "'";
@@ -380,7 +378,7 @@
 
   private MessageSender messageSender;
   private ResultChangeIds resultChangeIds;
-  private Map<String, String> loggingTags;
+  private ImmutableMap<String, String> loggingTags;
 
   @Inject
   ReceiveCommits(
@@ -502,7 +500,7 @@
     // Handles for outputting back over the wire to the end user.
     this.messageSender = messageSender != null ? messageSender : new ReceivePackMessageSender();
     this.resultChangeIds = resultChangeIds;
-    this.loggingTags = new HashMap<>();
+    this.loggingTags = ImmutableMap.of();
   }
 
   void init() {
@@ -529,6 +527,16 @@
     addMessage(error, ValidationMessage.Type.ERROR);
   }
 
+  /**
+   * Sends all messages which have been collected while processing the push to the client.
+   *
+   * <p><strong>Attention:</strong>{@link AsyncReceiveCommits} may call this method while {@link
+   * #processCommands(Collection, MultiProgressMonitor)} is still running (if the execution of
+   * processCommands takes too long and AsyncReceiveCommits gets a timeout). This means that local
+   * variables that are accessed in this method must be thread-safe (otherwise we may hit a {@link
+   * java.util.ConcurrentModificationException} if we read a variable here that at the same time is
+   * updated by the background thread that still executes processCommands).
+   */
   void sendMessages() {
     try (TraceContext traceContext =
         TraceContext.newTrace(
@@ -583,7 +591,7 @@
 
       commandProgress.end();
       progress.end();
-      loggingTags.putAll(traceContext.getTags());
+      loggingTags = traceContext.getTags();
       logger.atFine().log("Processing commands done.");
     }
   }
@@ -801,7 +809,7 @@
     Boolean isPrivate = null;
     Boolean wip = null;
     if (!updated.isEmpty()) {
-      edit = magicBranch != null && (magicBranch.edit || magicBranch.draft);
+      edit = magicBranch != null && magicBranch.edit;
       if (magicBranch != null) {
         if (magicBranch.isPrivate) {
           isPrivate = true;
@@ -1439,13 +1447,6 @@
     @Option(name = "--topic", metaVar = "NAME", usage = "attach topic to changes")
     String topic;
 
-    @Option(
-        name = "--draft",
-        usage =
-            "Will be removed. Before that, this option will be mapped to '--private'"
-                + "for new changes and '--edit' for existing changes")
-    boolean draft;
-
     @Option(name = "--private", usage = "mark new/updated change as private")
     boolean isPrivate;
 
@@ -1581,7 +1582,6 @@
       this.projectState = projectState;
       this.deprecatedTopicSeen = false;
       this.cmd = cmd;
-      this.draft = cmd.getRefName().startsWith(MagicBranch.NEW_DRAFT_CHANGE);
       this.labelTypes = labelTypes;
       GeneralPreferencesInfo prefs = user.state().generalPreferences();
       this.defaultPublishComments =
@@ -1798,14 +1798,6 @@
         return;
       }
 
-      // TODO(davido): Remove legacy support for drafts magic branch option
-      // after repo-tool supports private and work-in-progress changes.
-      if (magicBranch.draft && !receiveConfig.allowDrafts) {
-        errors.put(CODE_REVIEW_ERROR, ref);
-        reject(cmd, "draft workflow is disabled");
-        return;
-      }
-
       if (magicBranch.isPrivate && magicBranch.removePrivate) {
         reject(cmd, "the options 'private' and 'remove-private' are mutually exclusive");
         return;
@@ -1814,9 +1806,7 @@
       boolean privateByDefault =
           projectCache.get(project.getNameKey()).is(BooleanProjectConfig.PRIVATE_BY_DEFAULT);
       setChangeAsPrivate =
-          magicBranch.draft
-              || magicBranch.isPrivate
-              || (privateByDefault && !magicBranch.removePrivate);
+          magicBranch.isPrivate || (privateByDefault && !magicBranch.removePrivate);
 
       if (receiveConfig.disablePrivateChanges && setChangeAsPrivate) {
         reject(cmd, "private changes are disabled");
@@ -2662,7 +2652,7 @@
       logger.atFine().log("Read %d changes to replace", replaceByChange.size());
 
       if (magicBranch != null && magicBranch.cmd.getResult() != NOT_ATTEMPTED) {
-        // Cancel creations tied to refs/for/ or refs/drafts/ command.
+        // Cancel creations tied to refs/for/ command.
         for (ReplaceRequest req : replaceByChange.values()) {
           if (req.inputCommand == magicBranch.cmd && req.cmd != null) {
             req.cmd.setResult(Result.REJECTED_OTHER_REASON, "aborted");
@@ -2756,7 +2746,7 @@
             return false;
           }
 
-          if (magicBranch.edit || magicBranch.draft) {
+          if (magicBranch.edit) {
             return newEdit();
           }
         }
@@ -2949,7 +2939,7 @@
 
     void addOps(BatchUpdate bu, @Nullable Task progress) throws IOException {
       try (TraceTimer traceTimer = newTimer(ReplaceRequest.class, "addOps")) {
-        if (magicBranch != null && (magicBranch.edit || magicBranch.draft)) {
+        if (magicBranch != null && magicBranch.edit) {
           bu.addOp(notes.getChangeId(), new ReindexOnlyOp());
           if (prev != null) {
             bu.addRepoOnlyOp(new UpdateOneRefOp(prev));
diff --git a/java/com/google/gerrit/server/git/receive/ReceiveCommitsAdvertiseRefsHook.java b/java/com/google/gerrit/server/git/receive/ReceiveCommitsAdvertiseRefsHook.java
index 686cd81..02edc44 100644
--- a/java/com/google/gerrit/server/git/receive/ReceiveCommitsAdvertiseRefsHook.java
+++ b/java/com/google/gerrit/server/git/receive/ReceiveCommitsAdvertiseRefsHook.java
@@ -58,9 +58,6 @@
  * objects that client sends to the server. Unnecessary here refers to objects that the server
  * already has.
  *
- * <p>For some code paths in {@link com.google.gerrit.server.git.DefaultAdvertiseRefsHook}, we
- * already removed refs/changes, so the logic to skip these in this class become a no-op.
- *
  * <p>TODO(hiesel): Instrument this heuristic and proof its value.
  */
 public class ReceiveCommitsAdvertiseRefsHook implements AdvertiseRefsHook {
diff --git a/java/com/google/gerrit/server/git/receive/ReceiveCommitsAdvertiseRefsHookChain.java b/java/com/google/gerrit/server/git/receive/ReceiveCommitsAdvertiseRefsHookChain.java
index d10fc9a..14654a5 100644
--- a/java/com/google/gerrit/server/git/receive/ReceiveCommitsAdvertiseRefsHookChain.java
+++ b/java/com/google/gerrit/server/git/receive/ReceiveCommitsAdvertiseRefsHookChain.java
@@ -16,9 +16,6 @@
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.gerrit.reviewdb.client.Project;
-import com.google.gerrit.server.git.DefaultAdvertiseRefsHook;
-import com.google.gerrit.server.permissions.PermissionBackend;
-import com.google.gerrit.server.permissions.PermissionBackend.RefFilterOptions;
 import com.google.gerrit.server.query.change.InternalChangeQuery;
 import com.google.inject.Provider;
 import java.util.ArrayList;
@@ -37,10 +34,9 @@
    */
   public static AdvertiseRefsHook create(
       AllRefsWatcher allRefsWatcher,
-      PermissionBackend.ForProject perm,
       Provider<InternalChangeQuery> queryProvider,
       Project.NameKey projectName) {
-    return create(allRefsWatcher, perm, queryProvider, projectName, false);
+    return create(allRefsWatcher, queryProvider, projectName, false);
   }
 
   /**
@@ -51,22 +47,17 @@
    */
   @VisibleForTesting
   public static AdvertiseRefsHook createForTest(
-      PermissionBackend.ForProject perm,
-      Provider<InternalChangeQuery> queryProvider,
-      Project.NameKey projectName) {
-    return create(new AllRefsWatcher(), perm, queryProvider, projectName, true);
+      Provider<InternalChangeQuery> queryProvider, Project.NameKey projectName) {
+    return create(new AllRefsWatcher(), queryProvider, projectName, true);
   }
 
   private static AdvertiseRefsHook create(
       AllRefsWatcher allRefsWatcher,
-      PermissionBackend.ForProject perm,
       Provider<InternalChangeQuery> queryProvider,
       Project.NameKey projectName,
       boolean skipHackPushNegotiateHook) {
     List<AdvertiseRefsHook> advHooks = new ArrayList<>();
     advHooks.add(allRefsWatcher);
-    advHooks.add(
-        new DefaultAdvertiseRefsHook(perm, RefFilterOptions.builder().setFilterMeta(true).build()));
     advHooks.add(new ReceiveCommitsAdvertiseRefsHook(queryProvider, projectName));
     if (!skipHackPushNegotiateHook) {
       advHooks.add(new HackPushNegotiateHook());
diff --git a/java/com/google/gerrit/server/git/receive/ReceiveConfig.java b/java/com/google/gerrit/server/git/receive/ReceiveConfig.java
index b1c9f13..cdbf310 100644
--- a/java/com/google/gerrit/server/git/receive/ReceiveConfig.java
+++ b/java/com/google/gerrit/server/git/receive/ReceiveConfig.java
@@ -27,7 +27,6 @@
 class ReceiveConfig {
   final boolean checkMagicRefs;
   final boolean checkReferencedObjectsAreReachable;
-  final boolean allowDrafts;
   final int maxBatchCommits;
   final boolean disablePrivateChanges;
   private final int systemMaxBatchChanges;
@@ -38,7 +37,6 @@
     checkMagicRefs = config.getBoolean("receive", null, "checkMagicRefs", true);
     checkReferencedObjectsAreReachable =
         config.getBoolean("receive", null, "checkReferencedObjectsAreReachable", true);
-    allowDrafts = config.getBoolean("change", null, "allowDrafts", false);
     maxBatchCommits = config.getInt("receive", null, "maxBatchCommits", 10000);
     systemMaxBatchChanges = config.getInt("receive", "maxBatchChanges", 0);
     disablePrivateChanges = config.getBoolean("change", null, "disablePrivateChanges", false);
diff --git a/java/com/google/gerrit/server/index/change/ChangeSchemaDefinitions.java b/java/com/google/gerrit/server/index/change/ChangeSchemaDefinitions.java
index cde6a64..bf93edb 100644
--- a/java/com/google/gerrit/server/index/change/ChangeSchemaDefinitions.java
+++ b/java/com/google/gerrit/server/index/change/ChangeSchemaDefinitions.java
@@ -22,7 +22,7 @@
 
 public class ChangeSchemaDefinitions extends SchemaDefinitions<ChangeData> {
   @Deprecated
-  static final Schema<ChangeData> V39 =
+  static final Schema<ChangeData> V55 =
       schema(
           ChangeField.ADDED,
           ChangeField.APPROVAL,
@@ -36,11 +36,16 @@
           ChangeField.COMMIT_MESSAGE,
           ChangeField.DELETED,
           ChangeField.DELTA,
+          ChangeField.DIRECTORY,
           ChangeField.DRAFTBY,
           ChangeField.EDITBY,
+          ChangeField.EXACT_AUTHOR,
           ChangeField.EXACT_COMMIT,
+          ChangeField.EXACT_COMMITTER,
           ChangeField.EXACT_TOPIC,
+          ChangeField.EXTENSION,
           ChangeField.FILE_PART,
+          ChangeField.FOOTER,
           ChangeField.FUZZY_TOPIC,
           ChangeField.GROUP,
           ChangeField.HASHTAG,
@@ -49,67 +54,35 @@
           ChangeField.LABEL,
           ChangeField.LEGACY_ID,
           ChangeField.MERGEABLE,
+          ChangeField.ONLY_EXTENSIONS,
           ChangeField.OWNER,
           ChangeField.PATCH_SET,
           ChangeField.PATH,
+          ChangeField.PENDING_REVIEWER,
+          ChangeField.PENDING_REVIEWER_BY_EMAIL,
+          ChangeField.PRIVATE,
           ChangeField.PROJECT,
           ChangeField.PROJECTS,
           ChangeField.REF,
           ChangeField.REF_STATE,
           ChangeField.REF_STATE_PATTERN,
+          ChangeField.REVERT_OF,
           ChangeField.REVIEWEDBY,
           ChangeField.REVIEWER,
+          ChangeField.REVIEWER_BY_EMAIL,
           ChangeField.STAR,
           ChangeField.STARBY,
+          ChangeField.STARTED,
           ChangeField.STATUS,
           ChangeField.STORED_SUBMIT_RECORD_LENIENT,
           ChangeField.STORED_SUBMIT_RECORD_STRICT,
           ChangeField.SUBMISSIONID,
           ChangeField.SUBMIT_RECORD,
+          ChangeField.TOTAL_COMMENT_COUNT,
           ChangeField.TR,
           ChangeField.UNRESOLVED_COMMENT_COUNT,
-          ChangeField.UPDATED);
-
-  @Deprecated static final Schema<ChangeData> V40 = schema(V39, ChangeField.PRIVATE);
-  @Deprecated static final Schema<ChangeData> V41 = schema(V40, ChangeField.REVIEWER_BY_EMAIL);
-  @Deprecated static final Schema<ChangeData> V42 = schema(V41, ChangeField.WIP);
-
-  @Deprecated
-  static final Schema<ChangeData> V43 =
-      schema(V42, ChangeField.EXACT_AUTHOR, ChangeField.EXACT_COMMITTER);
-
-  @Deprecated
-  static final Schema<ChangeData> V44 =
-      schema(
-          V43,
-          ChangeField.STARTED,
-          ChangeField.PENDING_REVIEWER,
-          ChangeField.PENDING_REVIEWER_BY_EMAIL);
-
-  @Deprecated static final Schema<ChangeData> V45 = schema(V44, ChangeField.REVERT_OF);
-
-  @Deprecated static final Schema<ChangeData> V46 = schema(V45);
-
-  // Removal of draft change workflow requires reindexing
-  @Deprecated static final Schema<ChangeData> V47 = schema(V46);
-
-  // Rename of star label 'mute' to 'reviewed' requires reindexing
-  @Deprecated static final Schema<ChangeData> V48 = schema(V47);
-
-  @Deprecated static final Schema<ChangeData> V49 = schema(V48);
-
-  // Bump Lucene version requires reindexing
-  @Deprecated static final Schema<ChangeData> V50 = schema(V49);
-
-  @Deprecated static final Schema<ChangeData> V51 = schema(V50, ChangeField.TOTAL_COMMENT_COUNT);
-
-  @Deprecated static final Schema<ChangeData> V52 = schema(V51, ChangeField.EXTENSION);
-
-  @Deprecated static final Schema<ChangeData> V53 = schema(V52, ChangeField.ONLY_EXTENSIONS);
-
-  @Deprecated static final Schema<ChangeData> V54 = schema(V53, ChangeField.FOOTER);
-
-  @Deprecated static final Schema<ChangeData> V55 = schema(V54, ChangeField.DIRECTORY);
+          ChangeField.UPDATED,
+          ChangeField.WIP);
 
   // The computation of the 'extension' field is changed, hence reindexing is required.
   static final Schema<ChangeData> V56 = schema(V55);
diff --git a/java/com/google/gerrit/server/project/ProjectConfig.java b/java/com/google/gerrit/server/project/ProjectConfig.java
index 7eb5f57..65513ab 100644
--- a/java/com/google/gerrit/server/project/ProjectConfig.java
+++ b/java/com/google/gerrit/server/project/ProjectConfig.java
@@ -101,6 +101,7 @@
   public static final String KEY_COPY_MIN_SCORE = "copyMinScore";
   public static final String KEY_ALLOW_POST_SUBMIT = "allowPostSubmit";
   public static final String KEY_IGNORE_SELF_APPROVAL = "ignoreSelfApproval";
+  public static final String KEY_COPY_ANY_SCORE = "copyAnyScore";
   public static final String KEY_COPY_MAX_SCORE = "copyMaxScore";
   public static final String KEY_COPY_ALL_SCORES_ON_MERGE_FIRST_PARENT_UPDATE =
       "copyAllScoresOnMergeFirstParentUpdate";
@@ -960,6 +961,8 @@
           rc.getBoolean(LABEL, name, KEY_ALLOW_POST_SUBMIT, LabelType.DEF_ALLOW_POST_SUBMIT));
       label.setIgnoreSelfApproval(
           rc.getBoolean(LABEL, name, KEY_IGNORE_SELF_APPROVAL, LabelType.DEF_IGNORE_SELF_APPROVAL));
+      label.setCopyAnyScore(
+          rc.getBoolean(LABEL, name, KEY_COPY_ANY_SCORE, LabelType.DEF_COPY_ANY_SCORE));
       label.setCopyMinScore(
           rc.getBoolean(LABEL, name, KEY_COPY_MIN_SCORE, LabelType.DEF_COPY_MIN_SCORE));
       label.setCopyMaxScore(
@@ -1421,6 +1424,13 @@
           rc,
           LABEL,
           name,
+          KEY_COPY_ANY_SCORE,
+          label.isCopyAnyScore(),
+          LabelType.DEF_COPY_ANY_SCORE);
+      setBooleanConfigKey(
+          rc,
+          LABEL,
+          name,
           KEY_COPY_MIN_SCORE,
           label.isCopyMinScore(),
           LabelType.DEF_COPY_MIN_SCORE);
diff --git a/java/com/google/gerrit/server/restapi/change/CherryPickChange.java b/java/com/google/gerrit/server/restapi/change/CherryPickChange.java
index 11ca6bf..c1f32e8 100644
--- a/java/com/google/gerrit/server/restapi/change/CherryPickChange.java
+++ b/java/com/google/gerrit/server/restapi/change/CherryPickChange.java
@@ -161,7 +161,15 @@
       throws IOException, InvalidChangeOperationException, IntegrationException, UpdateException,
           RestApiException, ConfigInvalidException, NoSuchProjectException {
     return cherryPick(
-        batchUpdateFactory, change, change.getProject(), patch.commitId(), input, dest);
+        batchUpdateFactory,
+        change,
+        change.getProject(),
+        patch.commitId(),
+        input,
+        dest,
+        null,
+        null,
+        null);
   }
 
   /**
@@ -194,6 +202,50 @@
       BranchNameKey dest)
       throws IOException, InvalidChangeOperationException, IntegrationException, UpdateException,
           RestApiException, ConfigInvalidException, NoSuchProjectException {
+    return cherryPick(
+        batchUpdateFactory, sourceChange, project, sourceCommit, input, dest, null, null, null);
+  }
+
+  /**
+   * This function can be called directly to cherry-pick a change (or commit if sourceChange is
+   * null) with a few other parameters that are especially useful for cherry-picking a commit that
+   * is the revert-of another change.
+   *
+   * @param batchUpdateFactory Used for applying changes to the database.
+   * @param sourceChange Change to cherry pick. Can be null, and then the function will only cherry
+   *     pick a commit.
+   * @param project Project name
+   * @param sourceCommit Id of the commit to be cherry picked.
+   * @param input Input object for different configurations of cherry pick.
+   * @param dest Destination branch for the cherry pick.
+   * @param topic Topic name for the change created.
+   * @param revertedChange The id of the change that is reverted. This is used for the "revertOf"
+   *     field to mark the created cherry pick change as "revertOf" the original change that was
+   *     reverted.
+   * @param changeIdForNewChange The Change-Id that the new change that of the cherry pick will
+   *     have.
+   * @return Result object that describes the cherry pick.
+   * @throws IOException Unable to open repository or read from the database.
+   * @throws InvalidChangeOperationException Parent or branch don't exist, or two changes with same
+   *     key exist in the branch.
+   * @throws IntegrationException Merge conflict or trees are identical after cherry pick.
+   * @throws UpdateException Problem updating the database using batchUpdateFactory.
+   * @throws RestApiException Error such as invalid SHA1
+   * @throws ConfigInvalidException Can't find account to notify.
+   * @throws NoSuchProjectException Can't find project state.
+   */
+  public Result cherryPick(
+      BatchUpdate.Factory batchUpdateFactory,
+      @Nullable Change sourceChange,
+      Project.NameKey project,
+      ObjectId sourceCommit,
+      CherryPickInput input,
+      BranchNameKey dest,
+      @Nullable String topic,
+      @Nullable Change.Id revertedChange,
+      @Nullable ObjectId changeIdForNewChange)
+      throws IOException, InvalidChangeOperationException, IntegrationException, UpdateException,
+          RestApiException, ConfigInvalidException, NoSuchProjectException {
 
     IdentifiedUser identifiedUser = user.get();
     try (Repository git = gitManager.openRepository(project);
@@ -227,7 +279,8 @@
       Timestamp now = TimeUtil.nowTs();
       PersonIdent committerIdent = identifiedUser.newCommitterIdent(now, serverTimeZone);
 
-      final ObjectId generatedChangeId = Change.generateChangeId();
+      final ObjectId generatedChangeId =
+          changeIdForNewChange != null ? changeIdForNewChange : Change.generateChangeId();
       String commitMessage = ChangeIdUtil.insertId(message, generatedChangeId).trim() + '\n';
 
       CodeReviewCommit cherryPickCommit;
@@ -287,8 +340,10 @@
           } else {
             // Change key not found on destination branch. We can create a new
             // change.
-            String newTopic = null;
-            if (sourceChange != null && !Strings.isNullOrEmpty(sourceChange.getTopic())) {
+            String newTopic = topic;
+            if (topic == null
+                && sourceChange != null
+                && !Strings.isNullOrEmpty(sourceChange.getTopic())) {
               newTopic = sourceChange.getTopic() + "-" + newDest.shortName();
             }
             changeId =
@@ -299,7 +354,8 @@
                     newTopic,
                     sourceChange,
                     sourceCommit,
-                    input);
+                    input,
+                    revertedChange);
           }
           bu.execute();
           return Result.create(changeId, cherryPickCommit.getFilesWithGitConflicts());
@@ -370,15 +426,20 @@
       String refName,
       String topic,
       @Nullable Change sourceChange,
-      ObjectId sourceCommit,
-      CherryPickInput input)
+      @Nullable ObjectId sourceCommit,
+      CherryPickInput input,
+      @Nullable Change.Id revertOf)
       throws IOException {
     Change.Id changeId = Change.id(seq.nextChangeId());
     ChangeInserter ins = changeInserterFactory.create(changeId, cherryPickCommit, refName);
+    ins.setRevertOf(revertOf);
     BranchNameKey sourceBranch = sourceChange == null ? null : sourceChange.getDest();
     ins.setMessage(
-            messageForDestinationChange(
-                ins.getPatchSetId(), sourceBranch, sourceCommit, cherryPickCommit))
+            revertOf == null
+                ? messageForDestinationChange(
+                    ins.getPatchSetId(), sourceBranch, sourceCommit, cherryPickCommit)
+                : "Uploaded patch set 1.") // For revert commits, the message should not include
+        // cherry-pick information.
         .setTopic(topic)
         .setWorkInProgress(
             (sourceChange != null && sourceChange.isWorkInProgress())
diff --git a/java/com/google/gerrit/server/restapi/change/CreateChange.java b/java/com/google/gerrit/server/restapi/change/CreateChange.java
index 53a20a94..4d0b3f1 100644
--- a/java/com/google/gerrit/server/restapi/change/CreateChange.java
+++ b/java/com/google/gerrit/server/restapi/change/CreateChange.java
@@ -278,7 +278,7 @@
     try {
       permissionBackend.currentUser().project(project).ref(refName).check(RefPermission.READ);
     } catch (AuthException e) {
-      throw new ResourceNotFoundException(String.format("ref %s not found", refName));
+      throw new ResourceNotFoundException(String.format("ref %s not found", refName), e);
     }
 
     permissionBackend
@@ -342,7 +342,7 @@
       }
       return ins.getChange();
     } catch (IllegalArgumentException e) {
-      throw new BadRequestException(e.getMessage());
+      throw new BadRequestException(e.getMessage(), e);
     }
   }
 
@@ -356,7 +356,7 @@
     try {
       permissionBackend.currentUser().change(change).check(ChangePermission.READ);
     } catch (AuthException e) {
-      throw new UnprocessableEntityException("Read not permitted for " + baseChange);
+      throw new UnprocessableEntityException("Read not permitted for " + baseChange, e);
     }
 
     return change;
@@ -384,14 +384,15 @@
         parentCommit = ObjectId.fromString(baseCommit);
       } catch (InvalidObjectIdException e) {
         throw new UnprocessableEntityException(
-            String.format("Base %s doesn't represent a valid SHA-1", baseCommit));
+            String.format("Base %s doesn't represent a valid SHA-1", baseCommit), e);
       }
 
       RevCommit parentRevCommit;
       try {
         parentRevCommit = revWalk.parseCommit(parentCommit);
       } catch (MissingObjectException e) {
-        throw new UnprocessableEntityException(String.format("Base %s doesn't exist", baseCommit));
+        throw new UnprocessableEntityException(
+            String.format("Base %s doesn't exist", baseCommit), e);
       }
 
       if (destRef == null) {
diff --git a/java/com/google/gerrit/server/restapi/change/Revert.java b/java/com/google/gerrit/server/restapi/change/Revert.java
index c69a348..3a94529 100644
--- a/java/com/google/gerrit/server/restapi/change/Revert.java
+++ b/java/com/google/gerrit/server/restapi/change/Revert.java
@@ -18,7 +18,6 @@
 import static com.google.gerrit.extensions.conditions.BooleanCondition.and;
 import static com.google.gerrit.server.permissions.RefPermission.CREATE_CHANGE;
 
-import com.google.common.base.Strings;
 import com.google.common.flogger.FluentLogger;
 import com.google.gerrit.extensions.api.changes.NotifyHandling;
 import com.google.gerrit.extensions.api.changes.RevertInput;
@@ -37,15 +36,14 @@
 import com.google.gerrit.server.ChangeMessagesUtil;
 import com.google.gerrit.server.ChangeUtil;
 import com.google.gerrit.server.CurrentUser;
-import com.google.gerrit.server.GerritPersonIdent;
 import com.google.gerrit.server.PatchSetUtil;
 import com.google.gerrit.server.ReviewerSet;
 import com.google.gerrit.server.change.ChangeInserter;
 import com.google.gerrit.server.change.ChangeJson;
-import com.google.gerrit.server.change.ChangeMessages;
 import com.google.gerrit.server.change.ChangeResource;
 import com.google.gerrit.server.change.NotifyResolver;
 import com.google.gerrit.server.extensions.events.ChangeReverted;
+import com.google.gerrit.server.git.CommitUtil;
 import com.google.gerrit.server.git.GitRepositoryManager;
 import com.google.gerrit.server.mail.send.RevertedSender;
 import com.google.gerrit.server.notedb.ChangeNotes;
@@ -66,24 +64,19 @@
 import com.google.gerrit.server.update.UpdateException;
 import com.google.gerrit.server.util.time.TimeUtil;
 import com.google.inject.Inject;
-import com.google.inject.Provider;
 import com.google.inject.Singleton;
 import java.io.IOException;
 import java.sql.Timestamp;
-import java.text.MessageFormat;
 import java.util.HashSet;
 import java.util.Set;
 import org.eclipse.jgit.errors.ConfigInvalidException;
 import org.eclipse.jgit.errors.RepositoryNotFoundException;
-import org.eclipse.jgit.lib.CommitBuilder;
 import org.eclipse.jgit.lib.ObjectId;
 import org.eclipse.jgit.lib.ObjectInserter;
 import org.eclipse.jgit.lib.ObjectReader;
-import org.eclipse.jgit.lib.PersonIdent;
 import org.eclipse.jgit.lib.Repository;
 import org.eclipse.jgit.revwalk.RevCommit;
 import org.eclipse.jgit.revwalk.RevWalk;
-import org.eclipse.jgit.util.ChangeIdUtil;
 
 @Singleton
 public class Revert extends RetryingRestModifyView<ChangeResource, RevertInput, ChangeInfo>
@@ -98,12 +91,12 @@
   private final PatchSetUtil psUtil;
   private final RevertedSender.Factory revertedSenderFactory;
   private final ChangeJson.Factory json;
-  private final Provider<PersonIdent> serverIdent;
   private final ApprovalsUtil approvalsUtil;
   private final ChangeReverted changeReverted;
   private final ContributorAgreementsChecker contributorAgreements;
   private final ProjectCache projectCache;
   private final NotifyResolver notifyResolver;
+  private final CommitUtil commitUtil;
 
   @Inject
   Revert(
@@ -116,12 +109,12 @@
       PatchSetUtil psUtil,
       RevertedSender.Factory revertedSenderFactory,
       ChangeJson.Factory json,
-      @GerritPersonIdent Provider<PersonIdent> serverIdent,
       ApprovalsUtil approvalsUtil,
       ChangeReverted changeReverted,
       ContributorAgreementsChecker contributorAgreements,
       ProjectCache projectCache,
-      NotifyResolver notifyResolver) {
+      NotifyResolver notifyResolver,
+      CommitUtil commitUtil) {
     super(retryHelper);
     this.permissionBackend = permissionBackend;
     this.repoManager = repoManager;
@@ -131,12 +124,12 @@
     this.psUtil = psUtil;
     this.revertedSenderFactory = revertedSenderFactory;
     this.json = json;
-    this.serverIdent = serverIdent;
     this.approvalsUtil = approvalsUtil;
     this.changeReverted = changeReverted;
     this.contributorAgreements = contributorAgreements;
     this.projectCache = projectCache;
     this.notifyResolver = notifyResolver;
+    this.commitUtil = commitUtil;
   }
 
   @Override
@@ -160,7 +153,6 @@
   private Change.Id revert(
       BatchUpdate.Factory updateFactory, ChangeNotes notes, CurrentUser user, RevertInput input)
       throws IOException, RestApiException, UpdateException, ConfigInvalidException {
-    String message = Strings.emptyToNull(input.message);
     Change.Id changeIdToRevert = notes.getChangeId();
     PatchSet.Id patchSetId = notes.getChange().currentPatchSetId();
     PatchSet patch = psUtil.get(notes, patchSetId);
@@ -173,41 +165,17 @@
         ObjectInserter oi = git.newObjectInserter();
         ObjectReader reader = oi.newReader();
         RevWalk revWalk = new RevWalk(reader)) {
-      RevCommit commitToRevert = revWalk.parseCommit(patch.commitId());
-      if (commitToRevert.getParentCount() == 0) {
-        throw new ResourceConflictException("Cannot revert initial commit");
-      }
 
       Timestamp now = TimeUtil.nowTs();
-      PersonIdent committerIdent = serverIdent.get();
-      PersonIdent authorIdent =
-          user.asIdentifiedUser().newCommitterIdent(now, committerIdent.getTimeZone());
-
-      RevCommit parentToCommitToRevert = commitToRevert.getParent(0);
-      revWalk.parseHeaders(parentToCommitToRevert);
-
-      CommitBuilder revertCommitBuilder = new CommitBuilder();
-      revertCommitBuilder.addParentId(commitToRevert);
-      revertCommitBuilder.setTreeId(parentToCommitToRevert.getTree());
-      revertCommitBuilder.setAuthor(authorIdent);
-      revertCommitBuilder.setCommitter(authorIdent);
-
-      Change changeToRevert = notes.getChange();
-      if (message == null) {
-        message =
-            MessageFormat.format(
-                ChangeMessages.get().revertChangeDefaultMessage,
-                changeToRevert.getSubject(),
-                patch.commitId().name());
-      }
-
       ObjectId generatedChangeId = Change.generateChangeId();
-      revertCommitBuilder.setMessage(ChangeIdUtil.insertId(message, generatedChangeId, true));
+      Change changeToRevert = notes.getChange();
+      ObjectId revertCommitId =
+          commitUtil.createRevertCommit(
+              input.message, notes, user, generatedChangeId, now, oi, revWalk);
+
+      RevCommit revertCommit = revWalk.parseCommit(revertCommitId);
 
       Change.Id changeId = Change.id(seq.nextChangeId());
-      ObjectId id = oi.insert(revertCommitBuilder);
-      RevCommit revertCommit = revWalk.parseCommit(id);
-
       NotifyResolver.Result notify =
           notifyResolver.resolve(
               firstNonNull(input.notify, NotifyHandling.ALL), input.notifyDetails);
@@ -215,7 +183,7 @@
       ChangeInserter ins =
           changeInserterFactory
               .create(changeId, revertCommit, notes.getChange().getDest().branch())
-              .setTopic(changeToRevert.getTopic());
+              .setTopic(input.topic == null ? changeToRevert.getTopic() : input.topic.trim());
       ins.setMessage("Uploaded patch set 1.");
 
       ReviewerSet reviewerSet = approvalsUtil.getReviewers(notes);
diff --git a/java/com/google/gerrit/server/util/MagicBranch.java b/java/com/google/gerrit/server/util/MagicBranch.java
index 4e41be0..86d1ecb 100644
--- a/java/com/google/gerrit/server/util/MagicBranch.java
+++ b/java/com/google/gerrit/server/util/MagicBranch.java
@@ -26,28 +26,19 @@
   private static final FluentLogger logger = FluentLogger.forEnclosingClass();
 
   public static final String NEW_CHANGE = "refs/for/";
-  // TODO(xchangcheng): remove after 'repo' supports private/wip changes.
-  public static final String NEW_DRAFT_CHANGE = "refs/drafts/";
 
   /** Extracts the destination from a ref name */
   public static String getDestBranchName(String refName) {
-    String magicBranch = NEW_CHANGE;
-    if (refName.startsWith(NEW_DRAFT_CHANGE)) {
-      magicBranch = NEW_DRAFT_CHANGE;
-    }
-    return refName.substring(magicBranch.length());
+    return refName.substring(NEW_CHANGE.length());
   }
 
   /** Checks if the supplied ref name is a magic branch */
   public static boolean isMagicBranch(String refName) {
-    return refName.startsWith(NEW_DRAFT_CHANGE) || refName.startsWith(NEW_CHANGE);
+    return refName.startsWith(NEW_CHANGE);
   }
 
   /** Returns the ref name prefix for a magic branch, {@code null} if the branch is not magic */
   public static String getMagicRefNamePrefix(String refName) {
-    if (refName.startsWith(NEW_DRAFT_CHANGE)) {
-      return NEW_DRAFT_CHANGE;
-    }
     if (refName.startsWith(NEW_CHANGE)) {
       return NEW_CHANGE;
     }
@@ -63,15 +54,7 @@
    * branch.
    */
   public static Capable checkMagicBranchRefs(Repository repo, Project project) {
-    Capable result = checkMagicBranchRef(NEW_CHANGE, repo, project);
-    if (result != Capable.OK) {
-      return result;
-    }
-    result = checkMagicBranchRef(NEW_DRAFT_CHANGE, repo, project);
-    if (result != Capable.OK) {
-      return result;
-    }
-    return Capable.OK;
+    return checkMagicBranchRef(NEW_CHANGE, repo, project);
   }
 
   private static Capable checkMagicBranchRef(String branchName, Repository repo, Project project) {
diff --git a/java/com/google/gerrit/sshd/AbstractGitCommand.java b/java/com/google/gerrit/sshd/AbstractGitCommand.java
index f3ba99b..3978e4c 100644
--- a/java/com/google/gerrit/sshd/AbstractGitCommand.java
+++ b/java/com/google/gerrit/sshd/AbstractGitCommand.java
@@ -30,6 +30,8 @@
 import org.kohsuke.args4j.Argument;
 
 public abstract class AbstractGitCommand extends BaseCommand {
+  private static final String GIT_PROTOCOL = "GIT_PROTOCOL";
+
   @Argument(index = 0, metaVar = "PROJECT.git", required = true, usage = "project name")
   protected ProjectState projectState;
 
@@ -46,9 +48,15 @@
   protected Repository repo;
   protected Project.NameKey projectName;
   protected Project project;
+  protected String[] extraParameters;
 
   @Override
   public void start(ChannelSession channel, Environment env) {
+    String gitProtocol = env.getEnv().get(GIT_PROTOCOL);
+    if (gitProtocol != null) {
+      extraParameters = gitProtocol.split(":");
+    }
+
     Context ctx = context.subContext(newSession(), context.getCommandLine());
     final Context old = sshScope.set(ctx);
     try {
diff --git a/java/com/google/gerrit/sshd/commands/Receive.java b/java/com/google/gerrit/sshd/commands/Receive.java
index d9fd5d3..9653b65 100644
--- a/java/com/google/gerrit/sshd/commands/Receive.java
+++ b/java/com/google/gerrit/sshd/commands/Receive.java
@@ -19,10 +19,8 @@
 import com.google.common.flogger.FluentLogger;
 import com.google.gerrit.common.data.Capable;
 import com.google.gerrit.extensions.restapi.AuthException;
-import com.google.gerrit.git.ObjectIds;
 import com.google.gerrit.reviewdb.client.Account;
 import com.google.gerrit.server.IdentifiedUser;
-import com.google.gerrit.server.git.DefaultAdvertiseRefsHook;
 import com.google.gerrit.server.git.receive.AsyncReceiveCommits;
 import com.google.gerrit.server.notedb.ReviewerStateInternal;
 import com.google.gerrit.server.permissions.PermissionBackend;
@@ -33,12 +31,8 @@
 import com.google.gerrit.sshd.SshSession;
 import com.google.inject.Inject;
 import java.io.IOException;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
 import org.eclipse.jgit.errors.TooLargeObjectInPackException;
 import org.eclipse.jgit.errors.UnpackException;
-import org.eclipse.jgit.lib.Ref;
 import org.eclipse.jgit.transport.AdvertiseRefsHook;
 import org.eclipse.jgit.transport.ReceivePack;
 import org.kohsuke.args4j.Option;
@@ -120,58 +114,19 @@
         logger.atInfo().log(msg.toString());
         throw new UnloggedFailure(128, "error: " + badStream.getCause().getMessage());
       }
-
-      // This may have been triggered by branch level access controls.
-      // Log what the heck is going on, as detailed as we can.
-      //
       StringBuilder msg = new StringBuilder();
       msg.append("Unpack error on project \"").append(projectState.getName()).append("\":\n");
 
       msg.append("  AdvertiseRefsHook: ").append(rp.getAdvertiseRefsHook());
       if (rp.getAdvertiseRefsHook() == AdvertiseRefsHook.DEFAULT) {
         msg.append("DEFAULT");
-      } else if (rp.getAdvertiseRefsHook() instanceof DefaultAdvertiseRefsHook) {
-        msg.append("DefaultAdvertiseRefsHook");
       } else {
         msg.append(rp.getAdvertiseRefsHook().getClass());
       }
       msg.append("\n");
 
-      if (rp.getAdvertiseRefsHook() instanceof DefaultAdvertiseRefsHook) {
-        Map<String, Ref> adv = rp.getAdvertisedRefs();
-        msg.append("  Visible references (").append(adv.size()).append("):\n");
-        for (Ref ref : adv.values()) {
-          msg.append("  - ")
-              .append(abbreviateName(ref, rp))
-              .append(" ")
-              .append(ref.getName())
-              .append("\n");
-        }
-
-        List<Ref> allRefs = rp.getRepository().getRefDatabase().getRefs();
-        List<Ref> hidden = new ArrayList<>();
-        for (Ref ref : allRefs) {
-          if (!adv.containsKey(ref.getName())) {
-            hidden.add(ref);
-          }
-        }
-
-        msg.append("  Hidden references (").append(hidden.size()).append("):\n");
-        for (Ref ref : hidden) {
-          msg.append("  - ")
-              .append(abbreviateName(ref, rp))
-              .append(" ")
-              .append(ref.getName())
-              .append("\n");
-        }
-      }
-
       IOException detail = new IOException(msg.toString(), badStream);
       throw new Failure(128, "fatal: Unpack error, check server log", detail);
     }
   }
-
-  private String abbreviateName(Ref ref, ReceivePack rp) throws IOException {
-    return ObjectIds.abbreviateName(ref.getObjectId(), rp.getRevWalk().getObjectReader());
-  }
 }
diff --git a/java/com/google/gerrit/sshd/commands/Upload.java b/java/com/google/gerrit/sshd/commands/Upload.java
index 5a3c745..41323dd 100644
--- a/java/com/google/gerrit/sshd/commands/Upload.java
+++ b/java/com/google/gerrit/sshd/commands/Upload.java
@@ -14,12 +14,12 @@
 
 package com.google.gerrit.sshd.commands;
 
+import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Lists;
 import com.google.gerrit.extensions.registration.DynamicSet;
 import com.google.gerrit.extensions.restapi.AuthException;
 import com.google.gerrit.server.RequestInfo;
 import com.google.gerrit.server.RequestListener;
-import com.google.gerrit.server.git.DefaultAdvertiseRefsHook;
 import com.google.gerrit.server.git.PermissionAwareRepositoryManager;
 import com.google.gerrit.server.git.TransferConfig;
 import com.google.gerrit.server.git.UploadPackInitializer;
@@ -27,7 +27,6 @@
 import com.google.gerrit.server.git.validators.UploadValidators;
 import com.google.gerrit.server.logging.TraceContext;
 import com.google.gerrit.server.permissions.PermissionBackend;
-import com.google.gerrit.server.permissions.PermissionBackend.RefFilterOptions;
 import com.google.gerrit.server.permissions.PermissionBackendException;
 import com.google.gerrit.server.permissions.ProjectPermission;
 import com.google.gerrit.server.plugincontext.PluginSetContext;
@@ -59,7 +58,6 @@
     PermissionBackend.ForProject perm =
         permissionBackend.user(user).project(projectState.getNameKey());
     try {
-
       perm.check(ProjectPermission.RUN_UPLOAD_PACK);
     } catch (AuthException e) {
       throw new Failure(1, "fatal: upload-pack not permitted on this server");
@@ -67,17 +65,20 @@
       throw new Failure(1, "fatal: unable to check permissions " + e);
     }
 
-    Repository permissionAwareRepository = PermissionAwareRepositoryManager.wrap(repo, perm);
-    final UploadPack up = new UploadPack(permissionAwareRepository);
-    up.setAdvertiseRefsHook(new DefaultAdvertiseRefsHook(perm, RefFilterOptions.defaults()));
+    Repository permissionAwareRepo = PermissionAwareRepositoryManager.wrap(repo, perm);
+    UploadPack up = new UploadPack(permissionAwareRepo);
+
     up.setPackConfig(config.getPackConfig());
     up.setTimeout(config.getTimeout());
     up.setPostUploadHook(PostUploadHookChain.newChain(Lists.newArrayList(postUploadHooks)));
+    if (extraParameters != null) {
+      up.setExtraParameters(ImmutableList.copyOf(extraParameters));
+    }
 
     List<PreUploadHook> allPreUploadHooks = Lists.newArrayList(preUploadHooks);
     allPreUploadHooks.add(
         uploadValidatorsFactory.create(
-            project, permissionAwareRepository, session.getRemoteAddressAsString()));
+            project, permissionAwareRepo, session.getRemoteAddressAsString()));
     up.setPreUploadHook(PreUploadHookChain.newChain(allPreUploadHooks));
     for (UploadPackInitializer initializer : uploadPackInitializers) {
       initializer.init(projectState.getNameKey(), up);
diff --git a/java/com/google/gerrit/testing/InMemoryModule.java b/java/com/google/gerrit/testing/InMemoryModule.java
index 08835cc..d552095 100644
--- a/java/com/google/gerrit/testing/InMemoryModule.java
+++ b/java/com/google/gerrit/testing/InMemoryModule.java
@@ -227,10 +227,11 @@
 
     IndexType indexType = new IndexType(cfg.getString("index", null, "type"));
     // For custom index types, callers must provide their own module.
-    if (indexType.isLucene()) {
-      install(luceneIndexModule());
-    } else if (indexType.isElasticsearch()) {
+    if (indexType.isElasticsearch()) {
       install(elasticIndexModule());
+    } else {
+      // Also the default "custom" module for testing.
+      install(luceneIndexModule());
     }
     bind(ServerInformationImpl.class);
     bind(ServerInformation.class).to(ServerInformationImpl.class);
diff --git a/javatests/com/google/gerrit/acceptance/api/accounts/AccountIT.java b/javatests/com/google/gerrit/acceptance/api/accounts/AccountIT.java
index 47bc7b3..1fdf3d6 100644
--- a/javatests/com/google/gerrit/acceptance/api/accounts/AccountIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/accounts/AccountIT.java
@@ -57,6 +57,8 @@
 import com.google.common.util.concurrent.AtomicLongMap;
 import com.google.common.util.concurrent.Runnables;
 import com.google.gerrit.acceptance.AbstractDaemonTest;
+import com.google.gerrit.acceptance.ExtensionRegistry;
+import com.google.gerrit.acceptance.ExtensionRegistry.Registration;
 import com.google.gerrit.acceptance.GerritConfig;
 import com.google.gerrit.acceptance.PushOneCommit;
 import com.google.gerrit.acceptance.Sandboxed;
@@ -189,7 +191,6 @@
 import org.eclipse.jgit.transport.RemoteRefUpdate;
 import org.eclipse.jgit.treewalk.TreeWalk;
 import org.junit.After;
-import org.junit.Before;
 import org.junit.Test;
 
 public class AccountIT extends AbstractDaemonTest {
@@ -207,8 +208,6 @@
 
   @Inject private @ServerInitiated Provider<AccountsUpdate> accountsUpdateProvider;
   @Inject private AccountIndexer accountIndexer;
-  @Inject private DynamicSet<AccountIndexedListener> accountIndexedListeners;
-  @Inject private DynamicSet<GitReferenceUpdatedListener> refUpdateListeners;
   @Inject private ExternalIdNotes.Factory extIdNotesFactory;
   @Inject private ExternalIds externalIds;
   @Inject private GitReferenceUpdated gitReferenceUpdated;
@@ -222,6 +221,7 @@
   @Inject private StalenessChecker stalenessChecker;
   @Inject private VersionedAuthorizedKeys.Accessor authorizedKeys;
   @Inject private PermissionBackend permissionBackend;
+  @Inject private ExtensionRegistry extensionRegistry;
 
   @Inject protected Emails emails;
 
@@ -236,37 +236,6 @@
 
   @Inject protected GroupOperations groupOperations;
 
-  private AccountIndexedCounter accountIndexedCounter;
-  private RegistrationHandle accountIndexEventCounterHandle;
-  private RefUpdateCounter refUpdateCounter;
-  private RegistrationHandle refUpdateCounterHandle;
-
-  @Before
-  public void addAccountIndexEventCounter() {
-    accountIndexedCounter = new AccountIndexedCounter();
-    accountIndexEventCounterHandle = accountIndexedListeners.add("gerrit", accountIndexedCounter);
-  }
-
-  @After
-  public void removeAccountIndexEventCounter() {
-    if (accountIndexEventCounterHandle != null) {
-      accountIndexEventCounterHandle.remove();
-    }
-  }
-
-  @Before
-  public void addRefUpdateCounter() {
-    refUpdateCounter = new RefUpdateCounter();
-    refUpdateCounterHandle = refUpdateListeners.add("gerrit", refUpdateCounter);
-  }
-
-  @After
-  public void removeRefUpdateCounter() {
-    if (refUpdateCounterHandle != null) {
-      refUpdateCounterHandle.remove();
-    }
-  }
-
   @After
   public void clearPublicKeyStore() throws Exception {
     try (Repository repo = repoManager.openRepository(allUsers)) {
@@ -315,11 +284,14 @@
 
   @Test
   public void createByAccountCreator() throws Exception {
-    Account.Id accountId = createByAccountCreator(1);
-    refUpdateCounter.assertRefUpdateFor(
-        RefUpdateCounter.projectRef(allUsers, RefNames.refsUsers(accountId)),
-        RefUpdateCounter.projectRef(allUsers, RefNames.REFS_EXTERNAL_IDS),
-        RefUpdateCounter.projectRef(allUsers, RefNames.REFS_SEQUENCES + Sequences.NAME_ACCOUNTS));
+    RefUpdateCounter refUpdateCounter = new RefUpdateCounter();
+    try (Registration registration = extensionRegistry.newRegistration().add(refUpdateCounter)) {
+      Account.Id accountId = createByAccountCreator(1);
+      refUpdateCounter.assertRefUpdateFor(
+          RefUpdateCounter.projectRef(allUsers, RefNames.refsUsers(accountId)),
+          RefUpdateCounter.projectRef(allUsers, RefNames.REFS_EXTERNAL_IDS),
+          RefUpdateCounter.projectRef(allUsers, RefNames.REFS_SEQUENCES + Sequences.NAME_ACCOUNTS));
+    }
   }
 
   @Test
@@ -338,42 +310,54 @@
   }
 
   private Account.Id createByAccountCreator(int expectedAccountReindexCalls) throws Exception {
-    String name = "foo";
-    TestAccount foo = accountCreator.create(name);
-    AccountInfo info = gApi.accounts().id(foo.id().get()).get();
-    assertThat(info.username).isEqualTo(name);
-    assertThat(info.name).isEqualTo(name);
-    accountIndexedCounter.assertReindexOf(foo, expectedAccountReindexCalls);
-    assertUserBranch(foo.id(), name, null);
-    return foo.id();
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      String name = "foo";
+      TestAccount foo = accountCreator.create(name);
+      AccountInfo info = gApi.accounts().id(foo.id().get()).get();
+      assertThat(info.username).isEqualTo(name);
+      assertThat(info.name).isEqualTo(name);
+      accountIndexedCounter.assertReindexOf(foo, expectedAccountReindexCalls);
+      assertUserBranch(foo.id(), name, null);
+      return foo.id();
+    }
   }
 
   @Test
   public void createAnonymousCowardByAccountCreator() throws Exception {
-    TestAccount anonymousCoward = accountCreator.create();
-    accountIndexedCounter.assertReindexOf(anonymousCoward);
-    assertUserBranchWithoutAccountConfig(anonymousCoward.id());
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      TestAccount anonymousCoward = accountCreator.create();
+      accountIndexedCounter.assertReindexOf(anonymousCoward);
+      assertUserBranchWithoutAccountConfig(anonymousCoward.id());
+    }
   }
 
   @Test
   public void create() throws Exception {
-    AccountInput input = new AccountInput();
-    input.username = "foo";
-    input.name = "Foo";
-    input.email = "foo@example.com";
-    AccountInfo accountInfo = gApi.accounts().create(input).get();
-    assertThat(accountInfo._accountId).isNotNull();
-    assertThat(accountInfo.username).isEqualTo(input.username);
-    assertThat(accountInfo.name).isEqualTo(input.name);
-    assertThat(accountInfo.email).isEqualTo(input.email);
-    assertThat(accountInfo.status).isNull();
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      AccountInput input = new AccountInput();
+      input.username = "foo";
+      input.name = "Foo";
+      input.email = "foo@example.com";
+      AccountInfo accountInfo = gApi.accounts().create(input).get();
+      assertThat(accountInfo._accountId).isNotNull();
+      assertThat(accountInfo.username).isEqualTo(input.username);
+      assertThat(accountInfo.name).isEqualTo(input.name);
+      assertThat(accountInfo.email).isEqualTo(input.email);
+      assertThat(accountInfo.status).isNull();
 
-    Account.Id accountId = Account.id(accountInfo._accountId);
-    accountIndexedCounter.assertReindexOf(accountId, 1);
-    assertThat(externalIds.byAccount(accountId))
-        .containsExactly(
-            ExternalId.createUsername(input.username, accountId, null),
-            ExternalId.createEmail(accountId, input.email));
+      Account.Id accountId = Account.id(accountInfo._accountId);
+      accountIndexedCounter.assertReindexOf(accountId, 1);
+      assertThat(externalIds.byAccount(accountId))
+          .containsExactly(
+              ExternalId.createUsername(input.username, accountId, null),
+              ExternalId.createEmail(accountId, input.email));
+    }
   }
 
   @Test
@@ -517,69 +501,93 @@
 
   @Test
   public void get() throws Exception {
-    AccountInfo info = gApi.accounts().id("admin").get();
-    assertThat(info.name).isEqualTo("Administrator");
-    assertThat(info.email).isEqualTo("admin@example.com");
-    assertThat(info.username).isEqualTo("admin");
-    accountIndexedCounter.assertNoReindex();
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      AccountInfo info = gApi.accounts().id("admin").get();
+      assertThat(info.name).isEqualTo("Administrator");
+      assertThat(info.email).isEqualTo("admin@example.com");
+      assertThat(info.username).isEqualTo("admin");
+      accountIndexedCounter.assertNoReindex();
+    }
   }
 
   @Test
   public void getByIntId() throws Exception {
-    AccountInfo info = gApi.accounts().id("admin").get();
-    AccountInfo infoByIntId = gApi.accounts().id(info._accountId).get();
-    assertThat(info.name).isEqualTo(infoByIntId.name);
-    accountIndexedCounter.assertNoReindex();
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      AccountInfo info = gApi.accounts().id("admin").get();
+      AccountInfo infoByIntId = gApi.accounts().id(info._accountId).get();
+      assertThat(info.name).isEqualTo(infoByIntId.name);
+      accountIndexedCounter.assertNoReindex();
+    }
   }
 
   @Test
   public void self() throws Exception {
-    AccountInfo info = gApi.accounts().self().get();
-    assertUser(info, admin);
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      AccountInfo info = gApi.accounts().self().get();
+      assertUser(info, admin);
 
-    info = gApi.accounts().id("self").get();
-    assertUser(info, admin);
-    accountIndexedCounter.assertNoReindex();
+      info = gApi.accounts().id("self").get();
+      assertUser(info, admin);
+      accountIndexedCounter.assertNoReindex();
+    }
   }
 
   @Test
   public void active() throws Exception {
-    int id = gApi.accounts().id("user").get()._accountId;
-    assertThat(gApi.accounts().id("user").getActive()).isTrue();
-    gApi.accounts().id("user").setActive(false);
-    accountIndexedCounter.assertReindexOf(user);
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      int id = gApi.accounts().id("user").get()._accountId;
+      assertThat(gApi.accounts().id("user").getActive()).isTrue();
+      gApi.accounts().id("user").setActive(false);
+      accountIndexedCounter.assertReindexOf(user);
 
-    // Inactive users may only be resolved by ID.
-    ResourceNotFoundException thrown =
-        assertThrows(ResourceNotFoundException.class, () -> gApi.accounts().id("user"));
-    assertThat(thrown)
-        .hasMessageThat()
-        .isEqualTo(
-            "Account 'user' only matches inactive accounts. To use an inactive account, retry"
-                + " with one of the following exact account IDs:\n"
-                + id
-                + ": User <user@example.com>");
-    assertThat(gApi.accounts().id(id).getActive()).isFalse();
+      // Inactive users may only be resolved by ID.
+      ResourceNotFoundException thrown =
+          assertThrows(ResourceNotFoundException.class, () -> gApi.accounts().id("user"));
+      assertThat(thrown)
+          .hasMessageThat()
+          .isEqualTo(
+              "Account 'user' only matches inactive accounts. To use an inactive account, retry"
+                  + " with one of the following exact account IDs:\n"
+                  + id
+                  + ": User <user@example.com>");
+      assertThat(gApi.accounts().id(id).getActive()).isFalse();
 
-    gApi.accounts().id(id).setActive(true);
-    assertThat(gApi.accounts().id("user").getActive()).isTrue();
-    accountIndexedCounter.assertReindexOf(user);
+      gApi.accounts().id(id).setActive(true);
+      assertThat(gApi.accounts().id("user").getActive()).isTrue();
+      accountIndexedCounter.assertReindexOf(user);
+    }
   }
 
   @Test
   public void shouldAllowQueryByEmailForInactiveUser() throws Exception {
-    Account.Id activatableAccountId =
-        accountOperations.newAccount().inactive().preferredEmail("foo@activatable.com").create();
-    accountIndexedCounter.assertReindexOf(activatableAccountId, 1);
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      Account.Id activatableAccountId =
+          accountOperations.newAccount().inactive().preferredEmail("foo@activatable.com").create();
+      accountIndexedCounter.assertReindexOf(activatableAccountId, 1);
+    }
 
     gApi.changes().query("owner:foo@activatable.com").get();
   }
 
   @Test
   public void shouldAllowQueryByUserNameForInactiveUser() throws Exception {
-    Account.Id activatableAccountId =
-        accountOperations.newAccount().inactive().username("foo").create();
-    accountIndexedCounter.assertReindexOf(activatableAccountId, 1);
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      Account.Id activatableAccountId =
+          accountOperations.newAccount().inactive().username("foo").create();
+      accountIndexedCounter.assertReindexOf(activatableAccountId, 1);
+    }
 
     gApi.changes().query("owner:foo").get();
   }
@@ -688,84 +696,96 @@
 
   @Test
   public void starUnstarChange() throws Exception {
-    PushOneCommit.Result r = createChange();
-    String triplet = project.get() + "~master~" + r.getChangeId();
-    refUpdateCounter.clear();
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    RefUpdateCounter refUpdateCounter = new RefUpdateCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter).add(refUpdateCounter)) {
+      PushOneCommit.Result r = createChange();
+      String triplet = project.get() + "~master~" + r.getChangeId();
+      refUpdateCounter.clear();
 
-    gApi.accounts().self().starChange(triplet);
-    ChangeInfo change = info(triplet);
-    assertThat(change.starred).isTrue();
-    assertThat(change.stars).contains(DEFAULT_LABEL);
-    refUpdateCounter.assertRefUpdateFor(
-        RefUpdateCounter.projectRef(
-            allUsers, RefNames.refsStarredChanges(Change.id(change._number), admin.id())));
+      gApi.accounts().self().starChange(triplet);
+      ChangeInfo change = info(triplet);
+      assertThat(change.starred).isTrue();
+      assertThat(change.stars).contains(DEFAULT_LABEL);
+      refUpdateCounter.assertRefUpdateFor(
+          RefUpdateCounter.projectRef(
+              allUsers, RefNames.refsStarredChanges(Change.id(change._number), admin.id())));
 
-    gApi.accounts().self().unstarChange(triplet);
-    change = info(triplet);
-    assertThat(change.starred).isNull();
-    assertThat(change.stars).isNull();
-    refUpdateCounter.assertRefUpdateFor(
-        RefUpdateCounter.projectRef(
-            allUsers, RefNames.refsStarredChanges(Change.id(change._number), admin.id())));
+      gApi.accounts().self().unstarChange(triplet);
+      change = info(triplet);
+      assertThat(change.starred).isNull();
+      assertThat(change.stars).isNull();
+      refUpdateCounter.assertRefUpdateFor(
+          RefUpdateCounter.projectRef(
+              allUsers, RefNames.refsStarredChanges(Change.id(change._number), admin.id())));
 
-    accountIndexedCounter.assertNoReindex();
+      accountIndexedCounter.assertNoReindex();
+    }
   }
 
   @Test
   public void starUnstarChangeWithLabels() throws Exception {
-    PushOneCommit.Result r = createChange();
-    String triplet = project.get() + "~master~" + r.getChangeId();
-    refUpdateCounter.clear();
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    RefUpdateCounter refUpdateCounter = new RefUpdateCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter).add(refUpdateCounter)) {
+      PushOneCommit.Result r = createChange();
+      String triplet = project.get() + "~master~" + r.getChangeId();
+      refUpdateCounter.clear();
 
-    assertThat(gApi.accounts().self().getStars(triplet)).isEmpty();
-    assertThat(gApi.accounts().self().getStarredChanges()).isEmpty();
+      assertThat(gApi.accounts().self().getStars(triplet)).isEmpty();
+      assertThat(gApi.accounts().self().getStarredChanges()).isEmpty();
 
-    gApi.accounts()
-        .self()
-        .setStars(triplet, new StarsInput(ImmutableSet.of(DEFAULT_LABEL, "red", "blue")));
-    ChangeInfo change = info(triplet);
-    assertThat(change.starred).isTrue();
-    assertThat(change.stars).containsExactly("blue", "red", DEFAULT_LABEL).inOrder();
-    assertThat(gApi.accounts().self().getStars(triplet))
-        .containsExactly("blue", "red", DEFAULT_LABEL)
-        .inOrder();
-    List<ChangeInfo> starredChanges = gApi.accounts().self().getStarredChanges();
-    assertThat(starredChanges).hasSize(1);
-    ChangeInfo starredChange = starredChanges.get(0);
-    assertThat(starredChange._number).isEqualTo(r.getChange().getId().get());
-    assertThat(starredChange.starred).isTrue();
-    assertThat(starredChange.stars).containsExactly("blue", "red", DEFAULT_LABEL).inOrder();
-    refUpdateCounter.assertRefUpdateFor(
-        RefUpdateCounter.projectRef(
-            allUsers, RefNames.refsStarredChanges(Change.id(change._number), admin.id())));
+      gApi.accounts()
+          .self()
+          .setStars(triplet, new StarsInput(ImmutableSet.of(DEFAULT_LABEL, "red", "blue")));
+      ChangeInfo change = info(triplet);
+      assertThat(change.starred).isTrue();
+      assertThat(change.stars).containsExactly("blue", "red", DEFAULT_LABEL).inOrder();
+      assertThat(gApi.accounts().self().getStars(triplet))
+          .containsExactly("blue", "red", DEFAULT_LABEL)
+          .inOrder();
+      List<ChangeInfo> starredChanges = gApi.accounts().self().getStarredChanges();
+      assertThat(starredChanges).hasSize(1);
+      ChangeInfo starredChange = starredChanges.get(0);
+      assertThat(starredChange._number).isEqualTo(r.getChange().getId().get());
+      assertThat(starredChange.starred).isTrue();
+      assertThat(starredChange.stars).containsExactly("blue", "red", DEFAULT_LABEL).inOrder();
+      refUpdateCounter.assertRefUpdateFor(
+          RefUpdateCounter.projectRef(
+              allUsers, RefNames.refsStarredChanges(Change.id(change._number), admin.id())));
 
-    gApi.accounts()
-        .self()
-        .setStars(
-            triplet,
-            new StarsInput(ImmutableSet.of("yellow"), ImmutableSet.of(DEFAULT_LABEL, "blue")));
-    change = info(triplet);
-    assertThat(change.starred).isNull();
-    assertThat(change.stars).containsExactly("red", "yellow").inOrder();
-    assertThat(gApi.accounts().self().getStars(triplet)).containsExactly("red", "yellow").inOrder();
-    starredChanges = gApi.accounts().self().getStarredChanges();
-    assertThat(starredChanges).hasSize(1);
-    starredChange = starredChanges.get(0);
-    assertThat(starredChange._number).isEqualTo(r.getChange().getId().get());
-    assertThat(starredChange.starred).isNull();
-    assertThat(starredChange.stars).containsExactly("red", "yellow").inOrder();
-    refUpdateCounter.assertRefUpdateFor(
-        RefUpdateCounter.projectRef(
-            allUsers, RefNames.refsStarredChanges(Change.id(change._number), admin.id())));
+      gApi.accounts()
+          .self()
+          .setStars(
+              triplet,
+              new StarsInput(ImmutableSet.of("yellow"), ImmutableSet.of(DEFAULT_LABEL, "blue")));
+      change = info(triplet);
+      assertThat(change.starred).isNull();
+      assertThat(change.stars).containsExactly("red", "yellow").inOrder();
+      assertThat(gApi.accounts().self().getStars(triplet))
+          .containsExactly("red", "yellow")
+          .inOrder();
+      starredChanges = gApi.accounts().self().getStarredChanges();
+      assertThat(starredChanges).hasSize(1);
+      starredChange = starredChanges.get(0);
+      assertThat(starredChange._number).isEqualTo(r.getChange().getId().get());
+      assertThat(starredChange.starred).isNull();
+      assertThat(starredChange.stars).containsExactly("red", "yellow").inOrder();
+      refUpdateCounter.assertRefUpdateFor(
+          RefUpdateCounter.projectRef(
+              allUsers, RefNames.refsStarredChanges(Change.id(change._number), admin.id())));
 
-    accountIndexedCounter.assertNoReindex();
+      accountIndexedCounter.assertNoReindex();
 
-    requestScopeOperations.setApiUser(user.id());
-    AuthException thrown =
-        assertThrows(
-            AuthException.class,
-            () -> gApi.accounts().id(Integer.toString((admin.id().get()))).getStars(triplet));
-    assertThat(thrown).hasMessageThat().contains("not allowed to get stars of another account");
+      requestScopeOperations.setApiUser(user.id());
+      AuthException thrown =
+          assertThrows(
+              AuthException.class,
+              () -> gApi.accounts().id(Integer.toString((admin.id().get()))).getStars(triplet));
+      assertThat(thrown).hasMessageThat().contains("not allowed to get stars of another account");
+    }
   }
 
   @Test
@@ -825,65 +845,81 @@
 
   @Test
   public void ignoreChangeBySetStars() throws Exception {
-    TestAccount user2 = accountCreator.user2();
-    accountIndexedCounter.clear();
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      TestAccount user2 = accountCreator.user2();
+      accountIndexedCounter.clear();
 
-    PushOneCommit.Result r = createChange();
+      PushOneCommit.Result r = createChange();
 
-    AddReviewerInput in = new AddReviewerInput();
-    in.reviewer = user.email();
-    gApi.changes().id(r.getChangeId()).addReviewer(in);
+      AddReviewerInput in = new AddReviewerInput();
+      in.reviewer = user.email();
+      gApi.changes().id(r.getChangeId()).addReviewer(in);
 
-    in = new AddReviewerInput();
-    in.reviewer = user2.email();
-    gApi.changes().id(r.getChangeId()).addReviewer(in);
+      in = new AddReviewerInput();
+      in.reviewer = user2.email();
+      gApi.changes().id(r.getChangeId()).addReviewer(in);
 
-    requestScopeOperations.setApiUser(user.id());
-    gApi.accounts().self().setStars(r.getChangeId(), new StarsInput(ImmutableSet.of(IGNORE_LABEL)));
+      requestScopeOperations.setApiUser(user.id());
+      gApi.accounts()
+          .self()
+          .setStars(r.getChangeId(), new StarsInput(ImmutableSet.of(IGNORE_LABEL)));
 
-    sender.clear();
-    requestScopeOperations.setApiUser(admin.id());
-    gApi.changes().id(r.getChangeId()).abandon();
-    List<Message> messages = sender.getMessages();
-    assertThat(messages).hasSize(1);
-    assertThat(messages.get(0).rcpt()).containsExactly(user2.getEmailAddress());
-    accountIndexedCounter.assertNoReindex();
+      sender.clear();
+      requestScopeOperations.setApiUser(admin.id());
+      gApi.changes().id(r.getChangeId()).abandon();
+      List<Message> messages = sender.getMessages();
+      assertThat(messages).hasSize(1);
+      assertThat(messages.get(0).rcpt()).containsExactly(user2.getEmailAddress());
+      accountIndexedCounter.assertNoReindex();
+    }
   }
 
   @Test
   public void addReviewerToIgnoredChange() throws Exception {
-    PushOneCommit.Result r = createChange();
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      PushOneCommit.Result r = createChange();
 
-    requestScopeOperations.setApiUser(user.id());
-    gApi.accounts().self().setStars(r.getChangeId(), new StarsInput(ImmutableSet.of(IGNORE_LABEL)));
+      requestScopeOperations.setApiUser(user.id());
+      gApi.accounts()
+          .self()
+          .setStars(r.getChangeId(), new StarsInput(ImmutableSet.of(IGNORE_LABEL)));
 
-    sender.clear();
-    requestScopeOperations.setApiUser(admin.id());
+      sender.clear();
+      requestScopeOperations.setApiUser(admin.id());
 
-    AddReviewerInput in = new AddReviewerInput();
-    in.reviewer = user.email();
-    gApi.changes().id(r.getChangeId()).addReviewer(in);
-    List<Message> messages = sender.getMessages();
-    assertThat(messages).hasSize(1);
-    Message message = messages.get(0);
-    assertThat(message.rcpt()).containsExactly(user.getEmailAddress());
-    assertMailReplyTo(message, admin.email());
-    accountIndexedCounter.assertNoReindex();
+      AddReviewerInput in = new AddReviewerInput();
+      in.reviewer = user.email();
+      gApi.changes().id(r.getChangeId()).addReviewer(in);
+      List<Message> messages = sender.getMessages();
+      assertThat(messages).hasSize(1);
+      Message message = messages.get(0);
+      assertThat(message.rcpt()).containsExactly(user.getEmailAddress());
+      assertMailReplyTo(message, admin.email());
+      accountIndexedCounter.assertNoReindex();
+    }
   }
 
   @Test
   public void suggestAccounts() throws Exception {
-    String adminUsername = "admin";
-    List<AccountInfo> result = gApi.accounts().suggestAccounts().withQuery(adminUsername).get();
-    assertThat(result).hasSize(1);
-    assertThat(result.get(0).username).isEqualTo(adminUsername);
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      String adminUsername = "admin";
+      List<AccountInfo> result = gApi.accounts().suggestAccounts().withQuery(adminUsername).get();
+      assertThat(result).hasSize(1);
+      assertThat(result.get(0).username).isEqualTo(adminUsername);
 
-    List<AccountInfo> resultShortcutApi = gApi.accounts().suggestAccounts(adminUsername).get();
-    assertThat(resultShortcutApi).hasSize(result.size());
+      List<AccountInfo> resultShortcutApi = gApi.accounts().suggestAccounts(adminUsername).get();
+      assertThat(resultShortcutApi).hasSize(result.size());
 
-    List<AccountInfo> emptyResult = gApi.accounts().suggestAccounts("unknown").get();
-    assertThat(emptyResult).isEmpty();
-    accountIndexedCounter.assertNoReindex();
+      List<AccountInfo> emptyResult = gApi.accounts().suggestAccounts("unknown").get();
+      assertThat(emptyResult).isEmpty();
+      accountIndexedCounter.assertNoReindex();
+    }
   }
 
   @Test
@@ -983,17 +1019,21 @@
 
   @Test
   public void addEmail() throws Exception {
-    List<String> emails = ImmutableList.of("new.email@example.com", "new.email@example.systems");
-    Set<String> currentEmails = getEmails();
-    for (String email : emails) {
-      assertThat(currentEmails).doesNotContain(email);
-      EmailInput input = newEmailInput(email);
-      gApi.accounts().self().addEmail(input);
-      accountIndexedCounter.assertReindexOf(admin);
-    }
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      List<String> emails = ImmutableList.of("new.email@example.com", "new.email@example.systems");
+      Set<String> currentEmails = getEmails();
+      for (String email : emails) {
+        assertThat(currentEmails).doesNotContain(email);
+        EmailInput input = newEmailInput(email);
+        gApi.accounts().self().addEmail(input);
+        accountIndexedCounter.assertReindexOf(admin);
+      }
 
-    requestScopeOperations.resetCurrentApiUser();
-    assertThat(getEmails()).containsAtLeastElementsIn(emails);
+      requestScopeOperations.resetCurrentApiUser();
+      assertThat(getEmails()).containsAtLeastElementsIn(emails);
+    }
   }
 
   @Test
@@ -1011,13 +1051,17 @@
 
             // Non-supported TLD  (see tlds-alpha-by-domain.txt)
             "new.email@example.africa");
-    for (String email : emails) {
-      EmailInput input = newEmailInput(email);
-      BadRequestException thrown =
-          assertThrows(BadRequestException.class, () -> gApi.accounts().self().addEmail(input));
-      assertWithMessage(email).that(thrown).hasMessageThat().isEqualTo("invalid email address");
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      for (String email : emails) {
+        EmailInput input = newEmailInput(email);
+        BadRequestException thrown =
+            assertThrows(BadRequestException.class, () -> gApi.accounts().self().addEmail(input));
+        assertWithMessage(email).that(thrown).hasMessageThat().isEqualTo("invalid email address");
+      }
+      accountIndexedCounter.assertNoReindex();
     }
-    accountIndexedCounter.assertNoReindex();
   }
 
   @Test
@@ -1097,62 +1141,74 @@
 
   @Test
   public void addEmailAndSetPreferred() throws Exception {
-    String email = "foo.bar@example.com";
-    EmailInput input = new EmailInput();
-    input.email = email;
-    input.noConfirmation = true;
-    input.preferred = true;
-    gApi.accounts().self().addEmail(input);
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      String email = "foo.bar@example.com";
+      EmailInput input = new EmailInput();
+      input.email = email;
+      input.noConfirmation = true;
+      input.preferred = true;
+      gApi.accounts().self().addEmail(input);
 
-    // Account is reindexed twice; once on adding the new email,
-    // and then again on setting the email preferred.
-    accountIndexedCounter.assertReindexOf(admin, 2);
+      // Account is reindexed twice; once on adding the new email,
+      // and then again on setting the email preferred.
+      accountIndexedCounter.assertReindexOf(admin, 2);
 
-    String preferred = gApi.accounts().self().get().email;
-    assertThat(preferred).isEqualTo(email);
+      String preferred = gApi.accounts().self().get().email;
+      assertThat(preferred).isEqualTo(email);
+    }
   }
 
   @Test
   public void deleteEmail() throws Exception {
-    String email = "foo.bar@example.com";
-    EmailInput input = newEmailInput(email);
-    gApi.accounts().self().addEmail(input);
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      String email = "foo.bar@example.com";
+      EmailInput input = newEmailInput(email);
+      gApi.accounts().self().addEmail(input);
 
-    requestScopeOperations.resetCurrentApiUser();
-    assertThat(getEmails()).contains(email);
+      requestScopeOperations.resetCurrentApiUser();
+      assertThat(getEmails()).contains(email);
 
-    accountIndexedCounter.clear();
-    gApi.accounts().self().deleteEmail(input.email);
-    accountIndexedCounter.assertReindexOf(admin);
+      accountIndexedCounter.clear();
+      gApi.accounts().self().deleteEmail(input.email);
+      accountIndexedCounter.assertReindexOf(admin);
 
-    requestScopeOperations.resetCurrentApiUser();
-    assertThat(getEmails()).doesNotContain(email);
+      requestScopeOperations.resetCurrentApiUser();
+      assertThat(getEmails()).doesNotContain(email);
+    }
   }
 
   @Test
   public void deletePreferredEmail() throws Exception {
-    String previous = gApi.accounts().self().get().email;
-    String email = "foo.bar.baz@example.com";
-    EmailInput input = new EmailInput();
-    input.email = email;
-    input.noConfirmation = true;
-    input.preferred = true;
-    gApi.accounts().self().addEmail(input);
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      String previous = gApi.accounts().self().get().email;
+      String email = "foo.bar.baz@example.com";
+      EmailInput input = new EmailInput();
+      input.email = email;
+      input.noConfirmation = true;
+      input.preferred = true;
+      gApi.accounts().self().addEmail(input);
 
-    // Account is reindexed twice; once on adding the new email,
-    // and then again on setting the email preferred.
-    accountIndexedCounter.assertReindexOf(admin, 2);
+      // Account is reindexed twice; once on adding the new email,
+      // and then again on setting the email preferred.
+      accountIndexedCounter.assertReindexOf(admin, 2);
 
-    // The new preferred email is set
-    assertThat(gApi.accounts().self().get().email).isEqualTo(email);
+      // The new preferred email is set
+      assertThat(gApi.accounts().self().get().email).isEqualTo(email);
 
-    accountIndexedCounter.clear();
-    gApi.accounts().self().deleteEmail(input.email);
-    accountIndexedCounter.assertReindexOf(admin);
+      accountIndexedCounter.clear();
+      gApi.accounts().self().deleteEmail(input.email);
+      accountIndexedCounter.assertReindexOf(admin);
 
-    requestScopeOperations.resetCurrentApiUser();
-    assertThat(getEmails()).containsExactly(previous);
-    assertThat(gApi.accounts().self().get().email).isNull();
+      requestScopeOperations.resetCurrentApiUser();
+      assertThat(getEmails()).containsExactly(previous);
+      assertThat(gApi.accounts().self().get().email).isNull();
+    }
   }
 
   @Test
@@ -1178,64 +1234,77 @@
 
   @Test
   public void deleteEmailFromCustomExternalIdSchemes() throws Exception {
-    String email = "foo.bar@example.com";
-    String extId1 = "foo:bar";
-    String extId2 = "foo:baz";
-    accountsUpdateProvider
-        .get()
-        .update(
-            "Add External IDs",
-            admin.id(),
-            u ->
-                u.addExternalId(
-                        ExternalId.createWithEmail(ExternalId.Key.parse(extId1), admin.id(), email))
-                    .addExternalId(
-                        ExternalId.createWithEmail(
-                            ExternalId.Key.parse(extId2), admin.id(), email)));
-    accountIndexedCounter.assertReindexOf(admin);
-    assertThat(
-            gApi.accounts().self().getExternalIds().stream().map(e -> e.identity).collect(toSet()))
-        .containsAtLeast(extId1, extId2);
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      String email = "foo.bar@example.com";
+      String extId1 = "foo:bar";
+      String extId2 = "foo:baz";
+      accountsUpdateProvider
+          .get()
+          .update(
+              "Add External IDs",
+              admin.id(),
+              u ->
+                  u.addExternalId(
+                          ExternalId.createWithEmail(
+                              ExternalId.Key.parse(extId1), admin.id(), email))
+                      .addExternalId(
+                          ExternalId.createWithEmail(
+                              ExternalId.Key.parse(extId2), admin.id(), email)));
+      accountIndexedCounter.assertReindexOf(admin);
+      assertThat(
+              gApi.accounts().self().getExternalIds().stream()
+                  .map(e -> e.identity)
+                  .collect(toSet()))
+          .containsAtLeast(extId1, extId2);
 
-    requestScopeOperations.resetCurrentApiUser();
-    assertThat(getEmails()).contains(email);
+      requestScopeOperations.resetCurrentApiUser();
+      assertThat(getEmails()).contains(email);
 
-    gApi.accounts().self().deleteEmail(email);
-    accountIndexedCounter.assertReindexOf(admin);
+      gApi.accounts().self().deleteEmail(email);
+      accountIndexedCounter.assertReindexOf(admin);
 
-    requestScopeOperations.resetCurrentApiUser();
-    assertThat(getEmails()).doesNotContain(email);
-    assertThat(
-            gApi.accounts().self().getExternalIds().stream().map(e -> e.identity).collect(toSet()))
-        .containsNoneOf(extId1, extId2);
+      requestScopeOperations.resetCurrentApiUser();
+      assertThat(getEmails()).doesNotContain(email);
+      assertThat(
+              gApi.accounts().self().getExternalIds().stream()
+                  .map(e -> e.identity)
+                  .collect(toSet()))
+          .containsNoneOf(extId1, extId2);
+    }
   }
 
   @Test
   public void deleteEmailOfOtherUser() throws Exception {
-    String email = "foo.bar@example.com";
-    EmailInput input = new EmailInput();
-    input.email = email;
-    input.noConfirmation = true;
-    gApi.accounts().id(user.id().get()).addEmail(input);
-    accountIndexedCounter.assertReindexOf(user);
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      String email = "foo.bar@example.com";
+      EmailInput input = new EmailInput();
+      input.email = email;
+      input.noConfirmation = true;
+      gApi.accounts().id(user.id().get()).addEmail(input);
+      accountIndexedCounter.assertReindexOf(user);
 
-    requestScopeOperations.setApiUser(user.id());
-    assertThat(getEmails()).contains(email);
+      requestScopeOperations.setApiUser(user.id());
+      assertThat(getEmails()).contains(email);
 
-    // admin can delete email of user
-    requestScopeOperations.setApiUser(admin.id());
-    gApi.accounts().id(user.id().get()).deleteEmail(email);
-    accountIndexedCounter.assertReindexOf(user);
+      // admin can delete email of user
+      requestScopeOperations.setApiUser(admin.id());
+      gApi.accounts().id(user.id().get()).deleteEmail(email);
+      accountIndexedCounter.assertReindexOf(user);
 
-    requestScopeOperations.setApiUser(user.id());
-    assertThat(getEmails()).doesNotContain(email);
+      requestScopeOperations.setApiUser(user.id());
+      assertThat(getEmails()).doesNotContain(email);
 
-    // user cannot delete email of admin
-    AuthException thrown =
-        assertThrows(
-            AuthException.class,
-            () -> gApi.accounts().id(admin.id().get()).deleteEmail(admin.email()));
-    assertThat(thrown).hasMessageThat().contains("modify account not permitted");
+      // user cannot delete email of admin
+      AuthException thrown =
+          assertThrows(
+              AuthException.class,
+              () -> gApi.accounts().id(admin.id().get()).deleteEmail(admin.email()));
+      assertThat(thrown).hasMessageThat().contains("modify account not permitted");
+    }
   }
 
   @Test
@@ -1301,17 +1370,21 @@
   public void putStatus() throws Exception {
     List<String> statuses = ImmutableList.of("OOO", "Busy");
     AccountInfo info;
-    for (String status : statuses) {
-      gApi.accounts().self().setStatus(status);
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      for (String status : statuses) {
+        gApi.accounts().self().setStatus(status);
+        info = gApi.accounts().self().get();
+        assertUser(info, admin, status);
+        accountIndexedCounter.assertReindexOf(admin);
+      }
+
+      gApi.accounts().self().setStatus(null);
       info = gApi.accounts().self().get();
-      assertUser(info, admin, status);
+      assertUser(info, admin);
       accountIndexedCounter.assertReindexOf(admin);
     }
-
-    gApi.accounts().self().setStatus(null);
-    info = gApi.accounts().self().get();
-    assertUser(info, admin);
-    accountIndexedCounter.assertReindexOf(admin);
   }
 
   @Test
@@ -1347,61 +1420,65 @@
 
   @Test
   public void fetchUserBranch() throws Exception {
-    requestScopeOperations.setApiUser(user.id());
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      requestScopeOperations.setApiUser(user.id());
 
-    TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers, user);
-    String userRefName = RefNames.refsUsers(user.id());
+      TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers, user);
+      String userRefName = RefNames.refsUsers(user.id());
 
-    // remove default READ permissions
-    try (ProjectConfigUpdate u = updateProject(allUsers)) {
-      u.getConfig()
-          .getAccessSection(RefNames.REFS_USERS + "${" + RefPattern.USERID_SHARDED + "}", true)
-          .remove(new Permission(Permission.READ));
-      u.save();
+      // remove default READ permissions
+      try (ProjectConfigUpdate u = updateProject(allUsers)) {
+        u.getConfig()
+            .getAccessSection(RefNames.REFS_USERS + "${" + RefPattern.USERID_SHARDED + "}", true)
+            .remove(new Permission(Permission.READ));
+        u.save();
+      }
+
+      // deny READ permission that is inherited from All-Projects
+      projectOperations
+          .project(allUsers)
+          .forUpdate()
+          .add(deny(Permission.READ).ref(RefNames.REFS + "*").group(ANONYMOUS_USERS))
+          .update();
+
+      // fetching user branch without READ permission fails
+      assertThrows(TransportException.class, () -> fetch(allUsersRepo, userRefName + ":userRef"));
+
+      // allow each user to read its own user branch
+      projectOperations
+          .project(allUsers)
+          .forUpdate()
+          .add(
+              allow(Permission.READ)
+                  .ref(RefNames.REFS_USERS + "${" + RefPattern.USERID_SHARDED + "}")
+                  .group(REGISTERED_USERS))
+          .update();
+
+      // fetch user branch using refs/users/YY/XXXXXXX
+      fetch(allUsersRepo, userRefName + ":userRef");
+      Ref userRef = allUsersRepo.getRepository().exactRef("userRef");
+      assertThat(userRef).isNotNull();
+
+      // fetch user branch using refs/users/self
+      fetch(allUsersRepo, RefNames.REFS_USERS_SELF + ":userSelfRef");
+      Ref userSelfRef = allUsersRepo.getRepository().getRefDatabase().exactRef("userSelfRef");
+      assertThat(userSelfRef).isNotNull();
+      assertThat(userSelfRef.getObjectId()).isEqualTo(userRef.getObjectId());
+
+      accountIndexedCounter.assertNoReindex();
+
+      // fetching user branch of another user fails
+      String otherUserRefName = RefNames.refsUsers(admin.id());
+      TransportException thrown =
+          assertThrows(
+              TransportException.class,
+              () -> fetch(allUsersRepo, otherUserRefName + ":otherUserRef"));
+      assertThat(thrown)
+          .hasMessageThat()
+          .contains("Remote does not have " + otherUserRefName + " available for fetch.");
     }
-
-    // deny READ permission that is inherited from All-Projects
-    projectOperations
-        .project(allUsers)
-        .forUpdate()
-        .add(deny(Permission.READ).ref(RefNames.REFS + "*").group(ANONYMOUS_USERS))
-        .update();
-
-    // fetching user branch without READ permission fails
-    assertThrows(TransportException.class, () -> fetch(allUsersRepo, userRefName + ":userRef"));
-
-    // allow each user to read its own user branch
-    projectOperations
-        .project(allUsers)
-        .forUpdate()
-        .add(
-            allow(Permission.READ)
-                .ref(RefNames.REFS_USERS + "${" + RefPattern.USERID_SHARDED + "}")
-                .group(REGISTERED_USERS))
-        .update();
-
-    // fetch user branch using refs/users/YY/XXXXXXX
-    fetch(allUsersRepo, userRefName + ":userRef");
-    Ref userRef = allUsersRepo.getRepository().exactRef("userRef");
-    assertThat(userRef).isNotNull();
-
-    // fetch user branch using refs/users/self
-    fetch(allUsersRepo, RefNames.REFS_USERS_SELF + ":userSelfRef");
-    Ref userSelfRef = allUsersRepo.getRepository().getRefDatabase().exactRef("userSelfRef");
-    assertThat(userSelfRef).isNotNull();
-    assertThat(userSelfRef.getObjectId()).isEqualTo(userRef.getObjectId());
-
-    accountIndexedCounter.assertNoReindex();
-
-    // fetching user branch of another user fails
-    String otherUserRefName = RefNames.refsUsers(admin.id());
-    TransportException thrown =
-        assertThrows(
-            TransportException.class,
-            () -> fetch(allUsersRepo, otherUserRefName + ":otherUserRef"));
-    assertThat(thrown)
-        .hasMessageThat()
-        .contains("Remote does not have " + otherUserRefName + " available for fetch.");
   }
 
   @Test
@@ -1419,535 +1496,599 @@
 
   @Test
   public void pushToUserBranch() throws Exception {
-    TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
-    fetch(allUsersRepo, RefNames.refsUsers(admin.id()) + ":userRef");
-    allUsersRepo.reset("userRef");
-    PushOneCommit push = pushFactory.create(admin.newIdent(), allUsersRepo);
-    push.to(RefNames.refsUsers(admin.id())).assertOkStatus();
-    accountIndexedCounter.assertReindexOf(admin);
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
+      fetch(allUsersRepo, RefNames.refsUsers(admin.id()) + ":userRef");
+      allUsersRepo.reset("userRef");
+      PushOneCommit push = pushFactory.create(admin.newIdent(), allUsersRepo);
+      push.to(RefNames.refsUsers(admin.id())).assertOkStatus();
+      accountIndexedCounter.assertReindexOf(admin);
 
-    push = pushFactory.create(admin.newIdent(), allUsersRepo);
-    push.to(RefNames.REFS_USERS_SELF).assertOkStatus();
-    accountIndexedCounter.assertReindexOf(admin);
+      push = pushFactory.create(admin.newIdent(), allUsersRepo);
+      push.to(RefNames.REFS_USERS_SELF).assertOkStatus();
+      accountIndexedCounter.assertReindexOf(admin);
+    }
   }
 
   @Test
   public void pushToUserBranchForReview() throws Exception {
-    String userRefName = RefNames.refsUsers(admin.id());
-    TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
-    fetch(allUsersRepo, userRefName + ":userRef");
-    allUsersRepo.reset("userRef");
-    PushOneCommit push = pushFactory.create(admin.newIdent(), allUsersRepo);
-    PushOneCommit.Result r = push.to(MagicBranch.NEW_CHANGE + userRefName);
-    r.assertOkStatus();
-    accountIndexedCounter.assertNoReindex();
-    assertThat(r.getChange().change().getDest().branch()).isEqualTo(userRefName);
-    gApi.changes().id(r.getChangeId()).current().review(ReviewInput.approve());
-    gApi.changes().id(r.getChangeId()).current().submit();
-    accountIndexedCounter.assertReindexOf(admin);
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      String userRefName = RefNames.refsUsers(admin.id());
+      TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
+      fetch(allUsersRepo, userRefName + ":userRef");
+      allUsersRepo.reset("userRef");
+      PushOneCommit push = pushFactory.create(admin.newIdent(), allUsersRepo);
+      PushOneCommit.Result r = push.to(MagicBranch.NEW_CHANGE + userRefName);
+      r.assertOkStatus();
+      accountIndexedCounter.assertNoReindex();
+      assertThat(r.getChange().change().getDest().branch()).isEqualTo(userRefName);
+      gApi.changes().id(r.getChangeId()).current().review(ReviewInput.approve());
+      gApi.changes().id(r.getChangeId()).current().submit();
+      accountIndexedCounter.assertReindexOf(admin);
 
-    push = pushFactory.create(admin.newIdent(), allUsersRepo);
-    r = push.to(MagicBranch.NEW_CHANGE + RefNames.REFS_USERS_SELF);
-    r.assertOkStatus();
-    accountIndexedCounter.assertNoReindex();
-    assertThat(r.getChange().change().getDest().branch()).isEqualTo(userRefName);
-    gApi.changes().id(r.getChangeId()).current().review(ReviewInput.approve());
-    gApi.changes().id(r.getChangeId()).current().submit();
-    accountIndexedCounter.assertReindexOf(admin);
+      push = pushFactory.create(admin.newIdent(), allUsersRepo);
+      r = push.to(MagicBranch.NEW_CHANGE + RefNames.REFS_USERS_SELF);
+      r.assertOkStatus();
+      accountIndexedCounter.assertNoReindex();
+      assertThat(r.getChange().change().getDest().branch()).isEqualTo(userRefName);
+      gApi.changes().id(r.getChangeId()).current().review(ReviewInput.approve());
+      gApi.changes().id(r.getChangeId()).current().submit();
+      accountIndexedCounter.assertReindexOf(admin);
+    }
   }
 
   @Test
   public void pushAccountConfigToUserBranchForReviewAndSubmit() throws Exception {
-    String userRef = RefNames.refsUsers(admin.id());
-    TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
-    fetch(allUsersRepo, userRef + ":userRef");
-    allUsersRepo.reset("userRef");
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      String userRef = RefNames.refsUsers(admin.id());
+      TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
+      fetch(allUsersRepo, userRef + ":userRef");
+      allUsersRepo.reset("userRef");
 
-    Config ac = getAccountConfig(allUsersRepo);
-    ac.setString(AccountProperties.ACCOUNT, null, AccountProperties.KEY_STATUS, "out-of-office");
+      Config ac = getAccountConfig(allUsersRepo);
+      ac.setString(AccountProperties.ACCOUNT, null, AccountProperties.KEY_STATUS, "out-of-office");
 
-    PushOneCommit.Result r =
-        pushFactory
-            .create(
-                admin.newIdent(),
-                allUsersRepo,
-                "Update account config",
-                AccountProperties.ACCOUNT_CONFIG,
-                ac.toText())
-            .to(MagicBranch.NEW_CHANGE + userRef);
-    r.assertOkStatus();
-    accountIndexedCounter.assertNoReindex();
-    assertThat(r.getChange().change().getDest().branch()).isEqualTo(userRef);
+      PushOneCommit.Result r =
+          pushFactory
+              .create(
+                  admin.newIdent(),
+                  allUsersRepo,
+                  "Update account config",
+                  AccountProperties.ACCOUNT_CONFIG,
+                  ac.toText())
+              .to(MagicBranch.NEW_CHANGE + userRef);
+      r.assertOkStatus();
+      accountIndexedCounter.assertNoReindex();
+      assertThat(r.getChange().change().getDest().branch()).isEqualTo(userRef);
 
-    gApi.changes().id(r.getChangeId()).current().review(ReviewInput.approve());
-    gApi.changes().id(r.getChangeId()).current().submit();
-    accountIndexedCounter.assertReindexOf(admin);
+      gApi.changes().id(r.getChangeId()).current().review(ReviewInput.approve());
+      gApi.changes().id(r.getChangeId()).current().submit();
+      accountIndexedCounter.assertReindexOf(admin);
 
-    AccountInfo info = gApi.accounts().self().get();
-    assertThat(info.email).isEqualTo(admin.email());
-    assertThat(info.name).isEqualTo(admin.fullName());
-    assertThat(info.status).isEqualTo("out-of-office");
+      AccountInfo info = gApi.accounts().self().get();
+      assertThat(info.email).isEqualTo(admin.email());
+      assertThat(info.name).isEqualTo(admin.fullName());
+      assertThat(info.status).isEqualTo("out-of-office");
+    }
   }
 
   @Test
   public void pushAccountConfigWithPrefEmailThatDoesNotExistAsExtIdToUserBranchForReviewAndSubmit()
       throws Exception {
-    TestAccount foo = accountCreator.create(name("foo"), name("foo") + "@example.com", "Foo");
-    String userRef = RefNames.refsUsers(foo.id());
-    accountIndexedCounter.clear();
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      TestAccount foo = accountCreator.create(name("foo"), name("foo") + "@example.com", "Foo");
+      String userRef = RefNames.refsUsers(foo.id());
+      accountIndexedCounter.clear();
 
-    TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers, foo);
-    fetch(allUsersRepo, userRef + ":userRef");
-    allUsersRepo.reset("userRef");
+      TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers, foo);
+      fetch(allUsersRepo, userRef + ":userRef");
+      allUsersRepo.reset("userRef");
 
-    String email = "some.email@example.com";
-    Config ac = getAccountConfig(allUsersRepo);
-    ac.setString(AccountProperties.ACCOUNT, null, AccountProperties.KEY_PREFERRED_EMAIL, email);
+      String email = "some.email@example.com";
+      Config ac = getAccountConfig(allUsersRepo);
+      ac.setString(AccountProperties.ACCOUNT, null, AccountProperties.KEY_PREFERRED_EMAIL, email);
 
-    PushOneCommit.Result r =
-        pushFactory
-            .create(
-                foo.newIdent(),
-                allUsersRepo,
-                "Update account config",
-                AccountProperties.ACCOUNT_CONFIG,
-                ac.toText())
-            .to(MagicBranch.NEW_CHANGE + userRef);
-    r.assertOkStatus();
-    accountIndexedCounter.assertNoReindex();
-    assertThat(r.getChange().change().getDest().branch()).isEqualTo(userRef);
+      PushOneCommit.Result r =
+          pushFactory
+              .create(
+                  foo.newIdent(),
+                  allUsersRepo,
+                  "Update account config",
+                  AccountProperties.ACCOUNT_CONFIG,
+                  ac.toText())
+              .to(MagicBranch.NEW_CHANGE + userRef);
+      r.assertOkStatus();
+      accountIndexedCounter.assertNoReindex();
+      assertThat(r.getChange().change().getDest().branch()).isEqualTo(userRef);
 
-    requestScopeOperations.setApiUser(foo.id());
-    gApi.changes().id(r.getChangeId()).current().review(ReviewInput.approve());
-    gApi.changes().id(r.getChangeId()).current().submit();
+      requestScopeOperations.setApiUser(foo.id());
+      gApi.changes().id(r.getChangeId()).current().review(ReviewInput.approve());
+      gApi.changes().id(r.getChangeId()).current().submit();
 
-    accountIndexedCounter.assertReindexOf(foo);
+      accountIndexedCounter.assertReindexOf(foo);
 
-    AccountInfo info = gApi.accounts().self().get();
-    assertThat(info.email).isEqualTo(email);
-    assertThat(info.name).isEqualTo(foo.fullName());
+      AccountInfo info = gApi.accounts().self().get();
+      assertThat(info.email).isEqualTo(email);
+      assertThat(info.name).isEqualTo(foo.fullName());
+    }
   }
 
   @Test
   public void pushAccountConfigToUserBranchForReviewIsRejectedOnSubmitIfConfigIsInvalid()
       throws Exception {
-    String userRef = RefNames.refsUsers(admin.id());
-    TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
-    fetch(allUsersRepo, userRef + ":userRef");
-    allUsersRepo.reset("userRef");
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      String userRef = RefNames.refsUsers(admin.id());
+      TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
+      fetch(allUsersRepo, userRef + ":userRef");
+      allUsersRepo.reset("userRef");
 
-    PushOneCommit.Result r =
-        pushFactory
-            .create(
-                admin.newIdent(),
-                allUsersRepo,
-                "Update account config",
-                AccountProperties.ACCOUNT_CONFIG,
-                "invalid config")
-            .to(MagicBranch.NEW_CHANGE + userRef);
-    r.assertOkStatus();
-    accountIndexedCounter.assertNoReindex();
-    assertThat(r.getChange().change().getDest().branch()).isEqualTo(userRef);
+      PushOneCommit.Result r =
+          pushFactory
+              .create(
+                  admin.newIdent(),
+                  allUsersRepo,
+                  "Update account config",
+                  AccountProperties.ACCOUNT_CONFIG,
+                  "invalid config")
+              .to(MagicBranch.NEW_CHANGE + userRef);
+      r.assertOkStatus();
+      accountIndexedCounter.assertNoReindex();
+      assertThat(r.getChange().change().getDest().branch()).isEqualTo(userRef);
 
-    gApi.changes().id(r.getChangeId()).current().review(ReviewInput.approve());
-    ResourceConflictException thrown =
-        assertThrows(
-            ResourceConflictException.class,
-            () -> gApi.changes().id(r.getChangeId()).current().submit());
-    assertThat(thrown)
-        .hasMessageThat()
-        .contains(
-            String.format(
-                "invalid account configuration: commit '%s' has an invalid '%s' file for account"
-                    + " '%s': Invalid config file %s in commit %s",
-                r.getCommit().name(),
-                AccountProperties.ACCOUNT_CONFIG,
-                admin.id(),
-                AccountProperties.ACCOUNT_CONFIG,
-                r.getCommit().name()));
+      gApi.changes().id(r.getChangeId()).current().review(ReviewInput.approve());
+      ResourceConflictException thrown =
+          assertThrows(
+              ResourceConflictException.class,
+              () -> gApi.changes().id(r.getChangeId()).current().submit());
+      assertThat(thrown)
+          .hasMessageThat()
+          .contains(
+              String.format(
+                  "invalid account configuration: commit '%s' has an invalid '%s' file for account"
+                      + " '%s': Invalid config file %s in commit %s",
+                  r.getCommit().name(),
+                  AccountProperties.ACCOUNT_CONFIG,
+                  admin.id(),
+                  AccountProperties.ACCOUNT_CONFIG,
+                  r.getCommit().name()));
+    }
   }
 
   @Test
   public void pushAccountConfigToUserBranchForReviewIsRejectedOnSubmitIfPreferredEmailIsInvalid()
       throws Exception {
-    String userRef = RefNames.refsUsers(admin.id());
-    TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
-    fetch(allUsersRepo, userRef + ":userRef");
-    allUsersRepo.reset("userRef");
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      String userRef = RefNames.refsUsers(admin.id());
+      TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
+      fetch(allUsersRepo, userRef + ":userRef");
+      allUsersRepo.reset("userRef");
 
-    String noEmail = "no.email";
-    Config ac = getAccountConfig(allUsersRepo);
-    ac.setString(AccountProperties.ACCOUNT, null, AccountProperties.KEY_PREFERRED_EMAIL, noEmail);
+      String noEmail = "no.email";
+      Config ac = getAccountConfig(allUsersRepo);
+      ac.setString(AccountProperties.ACCOUNT, null, AccountProperties.KEY_PREFERRED_EMAIL, noEmail);
 
-    PushOneCommit.Result r =
-        pushFactory
-            .create(
-                admin.newIdent(),
-                allUsersRepo,
-                "Update account config",
-                AccountProperties.ACCOUNT_CONFIG,
-                ac.toText())
-            .to(MagicBranch.NEW_CHANGE + userRef);
-    r.assertOkStatus();
-    accountIndexedCounter.assertNoReindex();
-    assertThat(r.getChange().change().getDest().branch()).isEqualTo(userRef);
+      PushOneCommit.Result r =
+          pushFactory
+              .create(
+                  admin.newIdent(),
+                  allUsersRepo,
+                  "Update account config",
+                  AccountProperties.ACCOUNT_CONFIG,
+                  ac.toText())
+              .to(MagicBranch.NEW_CHANGE + userRef);
+      r.assertOkStatus();
+      accountIndexedCounter.assertNoReindex();
+      assertThat(r.getChange().change().getDest().branch()).isEqualTo(userRef);
 
-    gApi.changes().id(r.getChangeId()).current().review(ReviewInput.approve());
-    ResourceConflictException thrown =
-        assertThrows(
-            ResourceConflictException.class,
-            () -> gApi.changes().id(r.getChangeId()).current().submit());
-    assertThat(thrown)
-        .hasMessageThat()
-        .contains(
-            String.format(
-                "invalid account configuration: invalid preferred email '%s' for account '%s'",
-                noEmail, admin.id()));
+      gApi.changes().id(r.getChangeId()).current().review(ReviewInput.approve());
+      ResourceConflictException thrown =
+          assertThrows(
+              ResourceConflictException.class,
+              () -> gApi.changes().id(r.getChangeId()).current().submit());
+      assertThat(thrown)
+          .hasMessageThat()
+          .contains(
+              String.format(
+                  "invalid account configuration: invalid preferred email '%s' for account '%s'",
+                  noEmail, admin.id()));
+    }
   }
 
   @Test
   public void pushAccountConfigToUserBranchForReviewIsRejectedOnSubmitIfOwnAccountIsDeactivated()
       throws Exception {
-    String userRef = RefNames.refsUsers(admin.id());
-    TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
-    fetch(allUsersRepo, userRef + ":userRef");
-    allUsersRepo.reset("userRef");
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      String userRef = RefNames.refsUsers(admin.id());
+      TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
+      fetch(allUsersRepo, userRef + ":userRef");
+      allUsersRepo.reset("userRef");
 
-    Config ac = getAccountConfig(allUsersRepo);
-    ac.setBoolean(AccountProperties.ACCOUNT, null, AccountProperties.KEY_ACTIVE, false);
+      Config ac = getAccountConfig(allUsersRepo);
+      ac.setBoolean(AccountProperties.ACCOUNT, null, AccountProperties.KEY_ACTIVE, false);
 
-    PushOneCommit.Result r =
-        pushFactory
-            .create(
-                admin.newIdent(),
-                allUsersRepo,
-                "Update account config",
-                AccountProperties.ACCOUNT_CONFIG,
-                ac.toText())
-            .to(MagicBranch.NEW_CHANGE + userRef);
-    r.assertOkStatus();
-    accountIndexedCounter.assertNoReindex();
-    assertThat(r.getChange().change().getDest().branch()).isEqualTo(userRef);
+      PushOneCommit.Result r =
+          pushFactory
+              .create(
+                  admin.newIdent(),
+                  allUsersRepo,
+                  "Update account config",
+                  AccountProperties.ACCOUNT_CONFIG,
+                  ac.toText())
+              .to(MagicBranch.NEW_CHANGE + userRef);
+      r.assertOkStatus();
+      accountIndexedCounter.assertNoReindex();
+      assertThat(r.getChange().change().getDest().branch()).isEqualTo(userRef);
 
-    gApi.changes().id(r.getChangeId()).current().review(ReviewInput.approve());
-    ResourceConflictException thrown =
-        assertThrows(
-            ResourceConflictException.class,
-            () -> gApi.changes().id(r.getChangeId()).current().submit());
-    assertThat(thrown)
-        .hasMessageThat()
-        .contains("invalid account configuration: cannot deactivate own account");
+      gApi.changes().id(r.getChangeId()).current().review(ReviewInput.approve());
+      ResourceConflictException thrown =
+          assertThrows(
+              ResourceConflictException.class,
+              () -> gApi.changes().id(r.getChangeId()).current().submit());
+      assertThat(thrown)
+          .hasMessageThat()
+          .contains("invalid account configuration: cannot deactivate own account");
+    }
   }
 
   @Test
   public void pushAccountConfigToUserBranchForReviewDeactivateOtherAccount() throws Exception {
-    projectOperations
-        .allProjectsForUpdate()
-        .add(allowCapability(GlobalCapability.ACCESS_DATABASE).group(REGISTERED_USERS))
-        .update();
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      projectOperations
+          .allProjectsForUpdate()
+          .add(allowCapability(GlobalCapability.ACCESS_DATABASE).group(REGISTERED_USERS))
+          .update();
 
-    TestAccount foo = accountCreator.create(name("foo"));
-    assertThat(gApi.accounts().id(foo.id().get()).getActive()).isTrue();
-    String userRef = RefNames.refsUsers(foo.id());
-    accountIndexedCounter.clear();
+      TestAccount foo = accountCreator.create(name("foo"));
+      assertThat(gApi.accounts().id(foo.id().get()).getActive()).isTrue();
+      String userRef = RefNames.refsUsers(foo.id());
+      accountIndexedCounter.clear();
 
-    projectOperations
-        .project(allUsers)
-        .forUpdate()
-        .add(allow(Permission.PUSH).ref(userRef).group(adminGroupUuid()))
-        .add(allowLabel("Code-Review").ref(userRef).group(adminGroupUuid()).range(-2, 2))
-        .add(allow(Permission.SUBMIT).ref(userRef).group(adminGroupUuid()))
-        .update();
+      projectOperations
+          .project(allUsers)
+          .forUpdate()
+          .add(allow(Permission.PUSH).ref(userRef).group(adminGroupUuid()))
+          .add(allowLabel("Code-Review").ref(userRef).group(adminGroupUuid()).range(-2, 2))
+          .add(allow(Permission.SUBMIT).ref(userRef).group(adminGroupUuid()))
+          .update();
 
-    TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
-    fetch(allUsersRepo, userRef + ":userRef");
-    allUsersRepo.reset("userRef");
+      TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
+      fetch(allUsersRepo, userRef + ":userRef");
+      allUsersRepo.reset("userRef");
 
-    Config ac = getAccountConfig(allUsersRepo);
-    ac.setBoolean(AccountProperties.ACCOUNT, null, AccountProperties.KEY_ACTIVE, false);
+      Config ac = getAccountConfig(allUsersRepo);
+      ac.setBoolean(AccountProperties.ACCOUNT, null, AccountProperties.KEY_ACTIVE, false);
 
-    PushOneCommit.Result r =
-        pushFactory
-            .create(
-                admin.newIdent(),
-                allUsersRepo,
-                "Update account config",
-                AccountProperties.ACCOUNT_CONFIG,
-                ac.toText())
-            .to(MagicBranch.NEW_CHANGE + userRef);
-    r.assertOkStatus();
-    accountIndexedCounter.assertNoReindex();
-    assertThat(r.getChange().change().getDest().branch()).isEqualTo(userRef);
+      PushOneCommit.Result r =
+          pushFactory
+              .create(
+                  admin.newIdent(),
+                  allUsersRepo,
+                  "Update account config",
+                  AccountProperties.ACCOUNT_CONFIG,
+                  ac.toText())
+              .to(MagicBranch.NEW_CHANGE + userRef);
+      r.assertOkStatus();
+      accountIndexedCounter.assertNoReindex();
+      assertThat(r.getChange().change().getDest().branch()).isEqualTo(userRef);
 
-    gApi.changes().id(r.getChangeId()).current().review(ReviewInput.approve());
-    gApi.changes().id(r.getChangeId()).current().submit();
-    accountIndexedCounter.assertReindexOf(foo);
+      gApi.changes().id(r.getChangeId()).current().review(ReviewInput.approve());
+      gApi.changes().id(r.getChangeId()).current().submit();
+      accountIndexedCounter.assertReindexOf(foo);
 
-    assertThat(gApi.accounts().id(foo.id().get()).getActive()).isFalse();
+      assertThat(gApi.accounts().id(foo.id().get()).getActive()).isFalse();
+    }
   }
 
   @Test
   public void pushWatchConfigToUserBranch() throws Exception {
-    TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
-    fetch(allUsersRepo, RefNames.refsUsers(admin.id()) + ":userRef");
-    allUsersRepo.reset("userRef");
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
+      fetch(allUsersRepo, RefNames.refsUsers(admin.id()) + ":userRef");
+      allUsersRepo.reset("userRef");
 
-    Config wc = new Config();
-    wc.setString(
-        ProjectWatches.PROJECT,
-        project.get(),
-        ProjectWatches.KEY_NOTIFY,
-        ProjectWatches.NotifyValue.create(null, EnumSet.of(NotifyType.ALL_COMMENTS)).toString());
-    PushOneCommit push =
-        pushFactory.create(
-            admin.newIdent(),
-            allUsersRepo,
-            "Add project watch",
-            ProjectWatches.WATCH_CONFIG,
-            wc.toText());
-    push.to(RefNames.REFS_USERS_SELF).assertOkStatus();
-    accountIndexedCounter.assertReindexOf(admin);
+      Config wc = new Config();
+      wc.setString(
+          ProjectWatches.PROJECT,
+          project.get(),
+          ProjectWatches.KEY_NOTIFY,
+          ProjectWatches.NotifyValue.create(null, EnumSet.of(NotifyType.ALL_COMMENTS)).toString());
+      PushOneCommit push =
+          pushFactory.create(
+              admin.newIdent(),
+              allUsersRepo,
+              "Add project watch",
+              ProjectWatches.WATCH_CONFIG,
+              wc.toText());
+      push.to(RefNames.REFS_USERS_SELF).assertOkStatus();
+      accountIndexedCounter.assertReindexOf(admin);
 
-    String invalidNotifyValue = "]invalid[";
-    wc.setString(
-        ProjectWatches.PROJECT, project.get(), ProjectWatches.KEY_NOTIFY, invalidNotifyValue);
-    push =
-        pushFactory.create(
-            admin.newIdent(),
-            allUsersRepo,
-            "Add invalid project watch",
-            ProjectWatches.WATCH_CONFIG,
-            wc.toText());
-    PushOneCommit.Result r = push.to(RefNames.REFS_USERS_SELF);
-    r.assertErrorStatus("invalid account configuration");
-    r.assertMessage(
-        String.format(
-            "%s: Invalid project watch of account %d for project %s: %s",
-            ProjectWatches.WATCH_CONFIG, admin.id().get(), project.get(), invalidNotifyValue));
+      String invalidNotifyValue = "]invalid[";
+      wc.setString(
+          ProjectWatches.PROJECT, project.get(), ProjectWatches.KEY_NOTIFY, invalidNotifyValue);
+      push =
+          pushFactory.create(
+              admin.newIdent(),
+              allUsersRepo,
+              "Add invalid project watch",
+              ProjectWatches.WATCH_CONFIG,
+              wc.toText());
+      PushOneCommit.Result r = push.to(RefNames.REFS_USERS_SELF);
+      r.assertErrorStatus("invalid account configuration");
+      r.assertMessage(
+          String.format(
+              "%s: Invalid project watch of account %d for project %s: %s",
+              ProjectWatches.WATCH_CONFIG, admin.id().get(), project.get(), invalidNotifyValue));
+    }
   }
 
   @Test
   public void pushAccountConfigToUserBranch() throws Exception {
-    TestAccount oooUser = accountCreator.create("away", "away@mail.invalid", "Ambrose Way");
-    requestScopeOperations.setApiUser(oooUser.id());
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      TestAccount oooUser = accountCreator.create("away", "away@mail.invalid", "Ambrose Way");
+      requestScopeOperations.setApiUser(oooUser.id());
 
-    // Must clone as oooUser to ensure the push is allowed.
-    TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers, oooUser);
-    fetch(allUsersRepo, RefNames.refsUsers(oooUser.id()) + ":userRef");
-    allUsersRepo.reset("userRef");
+      // Must clone as oooUser to ensure the push is allowed.
+      TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers, oooUser);
+      fetch(allUsersRepo, RefNames.refsUsers(oooUser.id()) + ":userRef");
+      allUsersRepo.reset("userRef");
 
-    Config ac = getAccountConfig(allUsersRepo);
-    ac.setString(AccountProperties.ACCOUNT, null, AccountProperties.KEY_STATUS, "out-of-office");
+      Config ac = getAccountConfig(allUsersRepo);
+      ac.setString(AccountProperties.ACCOUNT, null, AccountProperties.KEY_STATUS, "out-of-office");
 
-    accountIndexedCounter.clear();
-    pushFactory
-        .create(
-            oooUser.newIdent(),
-            allUsersRepo,
-            "Update account config",
-            AccountProperties.ACCOUNT_CONFIG,
-            ac.toText())
-        .to(RefNames.refsUsers(oooUser.id()))
-        .assertOkStatus();
+      accountIndexedCounter.clear();
+      pushFactory
+          .create(
+              oooUser.newIdent(),
+              allUsersRepo,
+              "Update account config",
+              AccountProperties.ACCOUNT_CONFIG,
+              ac.toText())
+          .to(RefNames.refsUsers(oooUser.id()))
+          .assertOkStatus();
 
-    accountIndexedCounter.assertReindexOf(oooUser);
+      accountIndexedCounter.assertReindexOf(oooUser);
 
-    AccountInfo info = gApi.accounts().self().get();
-    assertThat(info.email).isEqualTo(oooUser.email());
-    assertThat(info.name).isEqualTo(oooUser.fullName());
-    assertThat(info.status).isEqualTo("out-of-office");
+      AccountInfo info = gApi.accounts().self().get();
+      assertThat(info.email).isEqualTo(oooUser.email());
+      assertThat(info.name).isEqualTo(oooUser.fullName());
+      assertThat(info.status).isEqualTo("out-of-office");
+    }
   }
 
   @Test
   public void pushAccountConfigToUserBranchIsRejectedIfConfigIsInvalid() throws Exception {
-    TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
-    fetch(allUsersRepo, RefNames.refsUsers(admin.id()) + ":userRef");
-    allUsersRepo.reset("userRef");
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
+      fetch(allUsersRepo, RefNames.refsUsers(admin.id()) + ":userRef");
+      allUsersRepo.reset("userRef");
 
-    PushOneCommit.Result r =
-        pushFactory
-            .create(
-                admin.newIdent(),
-                allUsersRepo,
-                "Update account config",
-                AccountProperties.ACCOUNT_CONFIG,
-                "invalid config")
-            .to(RefNames.REFS_USERS_SELF);
-    r.assertErrorStatus("invalid account configuration");
-    r.assertMessage(
-        String.format(
-            "commit '%s' has an invalid '%s' file for account '%s':"
-                + " Invalid config file %s in commit %s",
-            r.getCommit().name(),
-            AccountProperties.ACCOUNT_CONFIG,
-            admin.id(),
-            AccountProperties.ACCOUNT_CONFIG,
-            r.getCommit().name()));
-    accountIndexedCounter.assertNoReindex();
+      PushOneCommit.Result r =
+          pushFactory
+              .create(
+                  admin.newIdent(),
+                  allUsersRepo,
+                  "Update account config",
+                  AccountProperties.ACCOUNT_CONFIG,
+                  "invalid config")
+              .to(RefNames.REFS_USERS_SELF);
+      r.assertErrorStatus("invalid account configuration");
+      r.assertMessage(
+          String.format(
+              "commit '%s' has an invalid '%s' file for account '%s':"
+                  + " Invalid config file %s in commit %s",
+              r.getCommit().name(),
+              AccountProperties.ACCOUNT_CONFIG,
+              admin.id(),
+              AccountProperties.ACCOUNT_CONFIG,
+              r.getCommit().name()));
+      accountIndexedCounter.assertNoReindex();
+    }
   }
 
   @Test
   public void pushAccountConfigToUserBranchIsRejectedIfPreferredEmailIsInvalid() throws Exception {
-    TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
-    fetch(allUsersRepo, RefNames.refsUsers(admin.id()) + ":userRef");
-    allUsersRepo.reset("userRef");
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
+      fetch(allUsersRepo, RefNames.refsUsers(admin.id()) + ":userRef");
+      allUsersRepo.reset("userRef");
 
-    String noEmail = "no.email";
-    Config ac = getAccountConfig(allUsersRepo);
-    ac.setString(AccountProperties.ACCOUNT, null, AccountProperties.KEY_PREFERRED_EMAIL, noEmail);
+      String noEmail = "no.email";
+      Config ac = getAccountConfig(allUsersRepo);
+      ac.setString(AccountProperties.ACCOUNT, null, AccountProperties.KEY_PREFERRED_EMAIL, noEmail);
 
-    PushOneCommit.Result r =
-        pushFactory
-            .create(
-                admin.newIdent(),
-                allUsersRepo,
-                "Update account config",
-                AccountProperties.ACCOUNT_CONFIG,
-                ac.toText())
-            .to(RefNames.REFS_USERS_SELF);
-    r.assertErrorStatus("invalid account configuration");
-    r.assertMessage(
-        String.format("invalid preferred email '%s' for account '%s'", noEmail, admin.id()));
-    accountIndexedCounter.assertNoReindex();
+      PushOneCommit.Result r =
+          pushFactory
+              .create(
+                  admin.newIdent(),
+                  allUsersRepo,
+                  "Update account config",
+                  AccountProperties.ACCOUNT_CONFIG,
+                  ac.toText())
+              .to(RefNames.REFS_USERS_SELF);
+      r.assertErrorStatus("invalid account configuration");
+      r.assertMessage(
+          String.format("invalid preferred email '%s' for account '%s'", noEmail, admin.id()));
+      accountIndexedCounter.assertNoReindex();
+    }
   }
 
   @Test
   public void pushAccountConfigToUserBranchInvalidPreferredEmailButNotChanged() throws Exception {
-    TestAccount foo = accountCreator.create(name("foo"), name("foo") + "@example.com", "Foo");
-    String userRef = RefNames.refsUsers(foo.id());
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      TestAccount foo = accountCreator.create(name("foo"), name("foo") + "@example.com", "Foo");
+      String userRef = RefNames.refsUsers(foo.id());
 
-    String noEmail = "no.email";
-    accountsUpdateProvider
-        .get()
-        .update("Set Preferred Email", foo.id(), u -> u.setPreferredEmail(noEmail));
-    accountIndexedCounter.clear();
+      String noEmail = "no.email";
+      accountsUpdateProvider
+          .get()
+          .update("Set Preferred Email", foo.id(), u -> u.setPreferredEmail(noEmail));
+      accountIndexedCounter.clear();
 
-    projectOperations
-        .project(allUsers)
-        .forUpdate()
-        .add(allow(Permission.PUSH).ref(userRef).group(REGISTERED_USERS))
-        .update();
-    TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers, foo);
-    fetch(allUsersRepo, userRef + ":userRef");
-    allUsersRepo.reset("userRef");
+      projectOperations
+          .project(allUsers)
+          .forUpdate()
+          .add(allow(Permission.PUSH).ref(userRef).group(REGISTERED_USERS))
+          .update();
+      TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers, foo);
+      fetch(allUsersRepo, userRef + ":userRef");
+      allUsersRepo.reset("userRef");
 
-    String status = "in vacation";
-    Config ac = getAccountConfig(allUsersRepo);
-    ac.setString(AccountProperties.ACCOUNT, null, AccountProperties.KEY_STATUS, status);
+      String status = "in vacation";
+      Config ac = getAccountConfig(allUsersRepo);
+      ac.setString(AccountProperties.ACCOUNT, null, AccountProperties.KEY_STATUS, status);
 
-    pushFactory
-        .create(
-            foo.newIdent(),
-            allUsersRepo,
-            "Update account config",
-            AccountProperties.ACCOUNT_CONFIG,
-            ac.toText())
-        .to(userRef)
-        .assertOkStatus();
-    accountIndexedCounter.assertReindexOf(foo);
+      pushFactory
+          .create(
+              foo.newIdent(),
+              allUsersRepo,
+              "Update account config",
+              AccountProperties.ACCOUNT_CONFIG,
+              ac.toText())
+          .to(userRef)
+          .assertOkStatus();
+      accountIndexedCounter.assertReindexOf(foo);
 
-    AccountInfo info = gApi.accounts().id(foo.id().get()).get();
-    assertThat(info.email).isEqualTo(noEmail);
-    assertThat(info.name).isEqualTo(foo.fullName());
-    assertThat(info.status).isEqualTo(status);
+      AccountInfo info = gApi.accounts().id(foo.id().get()).get();
+      assertThat(info.email).isEqualTo(noEmail);
+      assertThat(info.name).isEqualTo(foo.fullName());
+      assertThat(info.status).isEqualTo(status);
+    }
   }
 
   @Test
   public void pushAccountConfigToUserBranchIfPreferredEmailDoesNotExistAsExtId() throws Exception {
-    TestAccount foo = accountCreator.create(name("foo"), name("foo") + "@example.com", "Foo");
-    String userRef = RefNames.refsUsers(foo.id());
-    accountIndexedCounter.clear();
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      TestAccount foo = accountCreator.create(name("foo"), name("foo") + "@example.com", "Foo");
+      String userRef = RefNames.refsUsers(foo.id());
+      accountIndexedCounter.clear();
 
-    projectOperations
-        .project(allUsers)
-        .forUpdate()
-        .add(allow(Permission.PUSH).ref(userRef).group(adminGroupUuid()))
-        .update();
+      projectOperations
+          .project(allUsers)
+          .forUpdate()
+          .add(allow(Permission.PUSH).ref(userRef).group(adminGroupUuid()))
+          .update();
 
-    TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers, foo);
-    fetch(allUsersRepo, userRef + ":userRef");
-    allUsersRepo.reset("userRef");
+      TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers, foo);
+      fetch(allUsersRepo, userRef + ":userRef");
+      allUsersRepo.reset("userRef");
 
-    String email = "some.email@example.com";
-    Config ac = getAccountConfig(allUsersRepo);
-    ac.setString(AccountProperties.ACCOUNT, null, AccountProperties.KEY_PREFERRED_EMAIL, email);
+      String email = "some.email@example.com";
+      Config ac = getAccountConfig(allUsersRepo);
+      ac.setString(AccountProperties.ACCOUNT, null, AccountProperties.KEY_PREFERRED_EMAIL, email);
 
-    pushFactory
-        .create(
-            foo.newIdent(),
-            allUsersRepo,
-            "Update account config",
-            AccountProperties.ACCOUNT_CONFIG,
-            ac.toText())
-        .to(userRef)
-        .assertOkStatus();
-    accountIndexedCounter.assertReindexOf(foo);
+      pushFactory
+          .create(
+              foo.newIdent(),
+              allUsersRepo,
+              "Update account config",
+              AccountProperties.ACCOUNT_CONFIG,
+              ac.toText())
+          .to(userRef)
+          .assertOkStatus();
+      accountIndexedCounter.assertReindexOf(foo);
 
-    AccountInfo info = gApi.accounts().id(foo.id().get()).get();
-    assertThat(info.email).isEqualTo(email);
-    assertThat(info.name).isEqualTo(foo.fullName());
+      AccountInfo info = gApi.accounts().id(foo.id().get()).get();
+      assertThat(info.email).isEqualTo(email);
+      assertThat(info.name).isEqualTo(foo.fullName());
+    }
   }
 
   @Test
   public void pushAccountConfigToUserBranchIsRejectedIfOwnAccountIsDeactivated() throws Exception {
-    TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
-    fetch(allUsersRepo, RefNames.refsUsers(admin.id()) + ":userRef");
-    allUsersRepo.reset("userRef");
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
+      fetch(allUsersRepo, RefNames.refsUsers(admin.id()) + ":userRef");
+      allUsersRepo.reset("userRef");
 
-    Config ac = getAccountConfig(allUsersRepo);
-    ac.setBoolean(AccountProperties.ACCOUNT, null, AccountProperties.KEY_ACTIVE, false);
+      Config ac = getAccountConfig(allUsersRepo);
+      ac.setBoolean(AccountProperties.ACCOUNT, null, AccountProperties.KEY_ACTIVE, false);
 
-    PushOneCommit.Result r =
-        pushFactory
-            .create(
-                admin.newIdent(),
-                allUsersRepo,
-                "Update account config",
-                AccountProperties.ACCOUNT_CONFIG,
-                ac.toText())
-            .to(RefNames.REFS_USERS_SELF);
-    r.assertErrorStatus("invalid account configuration");
-    r.assertMessage("cannot deactivate own account");
-    accountIndexedCounter.assertNoReindex();
+      PushOneCommit.Result r =
+          pushFactory
+              .create(
+                  admin.newIdent(),
+                  allUsersRepo,
+                  "Update account config",
+                  AccountProperties.ACCOUNT_CONFIG,
+                  ac.toText())
+              .to(RefNames.REFS_USERS_SELF);
+      r.assertErrorStatus("invalid account configuration");
+      r.assertMessage("cannot deactivate own account");
+      accountIndexedCounter.assertNoReindex();
+    }
   }
 
   @Test
   public void pushAccountConfigToUserBranchDeactivateOtherAccount() throws Exception {
-    projectOperations
-        .allProjectsForUpdate()
-        .add(allowCapability(GlobalCapability.ACCESS_DATABASE).group(REGISTERED_USERS))
-        .update();
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      projectOperations
+          .allProjectsForUpdate()
+          .add(allowCapability(GlobalCapability.ACCESS_DATABASE).group(REGISTERED_USERS))
+          .update();
 
-    TestAccount foo = accountCreator.create(name("foo"));
-    assertThat(gApi.accounts().id(foo.id().get()).getActive()).isTrue();
-    String userRef = RefNames.refsUsers(foo.id());
-    accountIndexedCounter.clear();
+      TestAccount foo = accountCreator.create(name("foo"));
+      assertThat(gApi.accounts().id(foo.id().get()).getActive()).isTrue();
+      String userRef = RefNames.refsUsers(foo.id());
+      accountIndexedCounter.clear();
 
-    projectOperations
-        .project(allUsers)
-        .forUpdate()
-        .add(allow(Permission.PUSH).ref(userRef).group(adminGroupUuid()))
-        .update();
+      projectOperations
+          .project(allUsers)
+          .forUpdate()
+          .add(allow(Permission.PUSH).ref(userRef).group(adminGroupUuid()))
+          .update();
 
-    TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
-    fetch(allUsersRepo, userRef + ":userRef");
-    allUsersRepo.reset("userRef");
+      TestRepository<InMemoryRepository> allUsersRepo = cloneProject(allUsers);
+      fetch(allUsersRepo, userRef + ":userRef");
+      allUsersRepo.reset("userRef");
 
-    Config ac = getAccountConfig(allUsersRepo);
-    ac.setBoolean(AccountProperties.ACCOUNT, null, AccountProperties.KEY_ACTIVE, false);
+      Config ac = getAccountConfig(allUsersRepo);
+      ac.setBoolean(AccountProperties.ACCOUNT, null, AccountProperties.KEY_ACTIVE, false);
 
-    pushFactory
-        .create(
-            admin.newIdent(),
-            allUsersRepo,
-            "Update account config",
-            AccountProperties.ACCOUNT_CONFIG,
-            ac.toText())
-        .to(userRef)
-        .assertOkStatus();
-    accountIndexedCounter.assertReindexOf(foo);
+      pushFactory
+          .create(
+              admin.newIdent(),
+              allUsersRepo,
+              "Update account config",
+              AccountProperties.ACCOUNT_CONFIG,
+              ac.toText())
+          .to(userRef)
+          .assertOkStatus();
+      accountIndexedCounter.assertReindexOf(foo);
 
-    assertThat(gApi.accounts().id(foo.id().get()).getActive()).isFalse();
+      assertThat(gApi.accounts().id(foo.id().get()).getActive()).isFalse();
+    }
   }
 
   @Test
@@ -2150,103 +2291,127 @@
 
   @Test
   public void addOtherUsersGpgKey_Conflict() throws Exception {
-    // Both users have a matching external ID for this key.
-    addExternalIdEmail(admin, "test5@example.com");
-    accountsUpdateProvider
-        .get()
-        .update(
-            "Add External ID",
-            user.id(),
-            u -> u.addExternalId(ExternalId.create("foo", "myId", user.id())));
-    accountIndexedCounter.assertReindexOf(user);
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      // Both users have a matching external ID for this key.
+      addExternalIdEmail(admin, "test5@example.com");
+      accountIndexedCounter.clear();
+      accountsUpdateProvider
+          .get()
+          .update(
+              "Add External ID",
+              user.id(),
+              u -> u.addExternalId(ExternalId.create("foo", "myId", user.id())));
+      accountIndexedCounter.assertReindexOf(user);
 
-    TestKey key = validKeyWithSecondUserId();
-    addGpgKey(key.getPublicKeyArmored());
-    requestScopeOperations.setApiUser(user.id());
+      TestKey key = validKeyWithSecondUserId();
+      addGpgKey(key.getPublicKeyArmored());
+      requestScopeOperations.setApiUser(user.id());
 
-    ResourceConflictException thrown =
-        assertThrows(
-            ResourceConflictException.class, () -> addGpgKey(user, key.getPublicKeyArmored()));
-    assertThat(thrown).hasMessageThat().contains("GPG key already associated with another account");
+      ResourceConflictException thrown =
+          assertThrows(
+              ResourceConflictException.class, () -> addGpgKey(user, key.getPublicKeyArmored()));
+      assertThat(thrown)
+          .hasMessageThat()
+          .contains("GPG key already associated with another account");
+    }
   }
 
   @Test
   public void listGpgKeys() throws Exception {
-    List<TestKey> keys = allValidKeys();
-    List<String> toAdd = new ArrayList<>(keys.size());
-    for (TestKey key : keys) {
-      addExternalIdEmail(admin, PushCertificateIdent.parse(key.getFirstUserId()).getEmailAddress());
-      toAdd.add(key.getPublicKeyArmored());
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      List<TestKey> keys = allValidKeys();
+      List<String> toAdd = new ArrayList<>(keys.size());
+      for (TestKey key : keys) {
+        addExternalIdEmail(
+            admin, PushCertificateIdent.parse(key.getFirstUserId()).getEmailAddress());
+        toAdd.add(key.getPublicKeyArmored());
+      }
+      accountIndexedCounter.clear();
+      gApi.accounts().self().putGpgKeys(toAdd, ImmutableList.of());
+      assertKeys(keys);
+      accountIndexedCounter.assertReindexOf(admin);
     }
-    gApi.accounts().self().putGpgKeys(toAdd, ImmutableList.of());
-    assertKeys(keys);
-    accountIndexedCounter.assertReindexOf(admin);
   }
 
   @Test
   public void deleteGpgKey() throws Exception {
-    TestKey key = validKeyWithoutExpiration();
-    String id = key.getKeyIdString();
-    addExternalIdEmail(admin, "test1@example.com");
-    addGpgKey(key.getPublicKeyArmored());
-    assertKeys(key);
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      TestKey key = validKeyWithoutExpiration();
+      String id = key.getKeyIdString();
+      addExternalIdEmail(admin, "test1@example.com");
+      addGpgKey(key.getPublicKeyArmored());
+      assertKeys(key);
+      accountIndexedCounter.clear();
 
-    sender.clear();
-    gApi.accounts().self().gpgKey(id).delete();
-    accountIndexedCounter.assertReindexOf(admin);
-    assertKeys();
-    assertThat(sender.getMessages()).hasSize(1);
-    assertThat(sender.getMessages().get(0).body()).contains("GPG keys have been deleted");
+      sender.clear();
+      gApi.accounts().self().gpgKey(id).delete();
+      accountIndexedCounter.assertReindexOf(admin);
+      assertKeys();
+      assertThat(sender.getMessages()).hasSize(1);
+      assertThat(sender.getMessages().get(0).body()).contains("GPG keys have been deleted");
 
-    ResourceNotFoundException thrown =
-        assertThrows(
-            ResourceNotFoundException.class, () -> gApi.accounts().self().gpgKey(id).get());
-    assertThat(thrown).hasMessageThat().contains(id);
+      ResourceNotFoundException thrown =
+          assertThrows(
+              ResourceNotFoundException.class, () -> gApi.accounts().self().gpgKey(id).get());
+      assertThat(thrown).hasMessageThat().contains(id);
+    }
   }
 
   @Test
   public void addAndRemoveGpgKeys() throws Exception {
-    for (TestKey key : allValidKeys()) {
-      addExternalIdEmail(admin, PushCertificateIdent.parse(key.getFirstUserId()).getEmailAddress());
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      for (TestKey key : allValidKeys()) {
+        addExternalIdEmail(
+            admin, PushCertificateIdent.parse(key.getFirstUserId()).getEmailAddress());
+      }
+      accountIndexedCounter.clear();
+      TestKey key1 = validKeyWithoutExpiration();
+      TestKey key2 = validKeyWithExpiration();
+      TestKey key5 = validKeyWithSecondUserId();
+
+      Map<String, GpgKeyInfo> infos =
+          gApi.accounts()
+              .self()
+              .putGpgKeys(
+                  ImmutableList.of(key1.getPublicKeyArmored(), key2.getPublicKeyArmored()),
+                  ImmutableList.of(key5.getKeyIdString()));
+      assertThat(infos.keySet()).containsExactly(key1.getKeyIdString(), key2.getKeyIdString());
+      assertKeys(key1, key2);
+      accountIndexedCounter.assertReindexOf(admin);
+
+      infos =
+          gApi.accounts()
+              .self()
+              .putGpgKeys(
+                  ImmutableList.of(key5.getPublicKeyArmored()),
+                  ImmutableList.of(key1.getKeyIdString()));
+      assertThat(infos.keySet()).containsExactly(key1.getKeyIdString(), key5.getKeyIdString());
+      assertKeyMapContains(key5, infos);
+      assertThat(infos.get(key1.getKeyIdString()).key).isNull();
+      assertKeys(key2, key5);
+      accountIndexedCounter.assertReindexOf(admin);
+
+      BadRequestException thrown =
+          assertThrows(
+              BadRequestException.class,
+              () ->
+                  gApi.accounts()
+                      .self()
+                      .putGpgKeys(
+                          ImmutableList.of(key2.getPublicKeyArmored()),
+                          ImmutableList.of(key2.getKeyIdString())));
+      assertThat(thrown)
+          .hasMessageThat()
+          .contains("Cannot both add and delete key: " + keyToString(key2.getPublicKey()));
     }
-    TestKey key1 = validKeyWithoutExpiration();
-    TestKey key2 = validKeyWithExpiration();
-    TestKey key5 = validKeyWithSecondUserId();
-
-    Map<String, GpgKeyInfo> infos =
-        gApi.accounts()
-            .self()
-            .putGpgKeys(
-                ImmutableList.of(key1.getPublicKeyArmored(), key2.getPublicKeyArmored()),
-                ImmutableList.of(key5.getKeyIdString()));
-    assertThat(infos.keySet()).containsExactly(key1.getKeyIdString(), key2.getKeyIdString());
-    assertKeys(key1, key2);
-    accountIndexedCounter.assertReindexOf(admin);
-
-    infos =
-        gApi.accounts()
-            .self()
-            .putGpgKeys(
-                ImmutableList.of(key5.getPublicKeyArmored()),
-                ImmutableList.of(key1.getKeyIdString()));
-    assertThat(infos.keySet()).containsExactly(key1.getKeyIdString(), key5.getKeyIdString());
-    assertKeyMapContains(key5, infos);
-    assertThat(infos.get(key1.getKeyIdString()).key).isNull();
-    assertKeys(key2, key5);
-    accountIndexedCounter.assertReindexOf(admin);
-
-    BadRequestException thrown =
-        assertThrows(
-            BadRequestException.class,
-            () ->
-                gApi.accounts()
-                    .self()
-                    .putGpgKeys(
-                        ImmutableList.of(key2.getPublicKeyArmored()),
-                        ImmutableList.of(key2.getKeyIdString())));
-    assertThat(thrown)
-        .hasMessageThat()
-        .contains("Cannot both add and delete key: " + keyToString(key2.getPublicKey()));
   }
 
   @Test
@@ -2259,110 +2424,118 @@
   @Test
   @UseSsh
   public void sshKeys() throws Exception {
-    // The test account should initially have exactly one ssh key
-    List<SshKeyInfo> info = gApi.accounts().self().listSshKeys();
-    assertThat(info).hasSize(1);
-    assertSequenceNumbers(info);
-    SshKeyInfo key = info.get(0);
-    KeyPair keyPair = sshKeys.getKeyPair(admin);
-    String initial = TestSshKeys.publicKey(keyPair, admin.email());
-    assertThat(key.sshPublicKey).isEqualTo(initial);
-    accountIndexedCounter.assertNoReindex();
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      // The test account should initially have exactly one ssh key
+      List<SshKeyInfo> info = gApi.accounts().self().listSshKeys();
+      assertThat(info).hasSize(1);
+      assertSequenceNumbers(info);
+      SshKeyInfo key = info.get(0);
+      KeyPair keyPair = sshKeys.getKeyPair(admin);
+      String initial = TestSshKeys.publicKey(keyPair, admin.email());
+      assertThat(key.sshPublicKey).isEqualTo(initial);
+      accountIndexedCounter.assertNoReindex();
 
-    // Add a new key
-    sender.clear();
-    String newKey = TestSshKeys.publicKey(TestSshKeys.genSshKey(), admin.email());
-    gApi.accounts().self().addSshKey(newKey);
-    info = gApi.accounts().self().listSshKeys();
-    assertThat(info).hasSize(2);
-    assertSequenceNumbers(info);
-    accountIndexedCounter.assertReindexOf(admin);
-    assertThat(sender.getMessages()).hasSize(1);
-    assertThat(sender.getMessages().get(0).body()).contains("new SSH keys have been added");
+      // Add a new key
+      sender.clear();
+      String newKey = TestSshKeys.publicKey(TestSshKeys.genSshKey(), admin.email());
+      gApi.accounts().self().addSshKey(newKey);
+      info = gApi.accounts().self().listSshKeys();
+      assertThat(info).hasSize(2);
+      assertSequenceNumbers(info);
+      accountIndexedCounter.assertReindexOf(admin);
+      assertThat(sender.getMessages()).hasSize(1);
+      assertThat(sender.getMessages().get(0).body()).contains("new SSH keys have been added");
 
-    // Add an existing key (the request succeeds, but the key isn't added again)
-    sender.clear();
-    gApi.accounts().self().addSshKey(initial);
-    info = gApi.accounts().self().listSshKeys();
-    assertThat(info).hasSize(2);
-    assertSequenceNumbers(info);
-    accountIndexedCounter.assertNoReindex();
-    // TODO: Issue 10769: Adding an already existing key should not result in a notification email
-    assertThat(sender.getMessages()).hasSize(1);
-    assertThat(sender.getMessages().get(0).body()).contains("new SSH keys have been added");
+      // Add an existing key (the request succeeds, but the key isn't added again)
+      sender.clear();
+      gApi.accounts().self().addSshKey(initial);
+      info = gApi.accounts().self().listSshKeys();
+      assertThat(info).hasSize(2);
+      assertSequenceNumbers(info);
+      accountIndexedCounter.assertNoReindex();
+      // TODO: Issue 10769: Adding an already existing key should not result in a notification email
+      assertThat(sender.getMessages()).hasSize(1);
+      assertThat(sender.getMessages().get(0).body()).contains("new SSH keys have been added");
 
-    // Add another new key
-    sender.clear();
-    String newKey2 = TestSshKeys.publicKey(TestSshKeys.genSshKey(), admin.email());
-    gApi.accounts().self().addSshKey(newKey2);
-    info = gApi.accounts().self().listSshKeys();
-    assertThat(info).hasSize(3);
-    assertSequenceNumbers(info);
-    accountIndexedCounter.assertReindexOf(admin);
-    assertThat(sender.getMessages()).hasSize(1);
-    assertThat(sender.getMessages().get(0).body()).contains("new SSH keys have been added");
+      // Add another new key
+      sender.clear();
+      String newKey2 = TestSshKeys.publicKey(TestSshKeys.genSshKey(), admin.email());
+      gApi.accounts().self().addSshKey(newKey2);
+      info = gApi.accounts().self().listSshKeys();
+      assertThat(info).hasSize(3);
+      assertSequenceNumbers(info);
+      accountIndexedCounter.assertReindexOf(admin);
+      assertThat(sender.getMessages()).hasSize(1);
+      assertThat(sender.getMessages().get(0).body()).contains("new SSH keys have been added");
 
-    // Delete second key
-    sender.clear();
-    gApi.accounts().self().deleteSshKey(2);
-    info = gApi.accounts().self().listSshKeys();
-    assertThat(info).hasSize(2);
-    assertThat(info.get(0).seq).isEqualTo(1);
-    assertThat(info.get(1).seq).isEqualTo(3);
-    accountIndexedCounter.assertReindexOf(admin);
+      // Delete second key
+      sender.clear();
+      gApi.accounts().self().deleteSshKey(2);
+      info = gApi.accounts().self().listSshKeys();
+      assertThat(info).hasSize(2);
+      assertThat(info.get(0).seq).isEqualTo(1);
+      assertThat(info.get(1).seq).isEqualTo(3);
+      accountIndexedCounter.assertReindexOf(admin);
 
-    assertThat(sender.getMessages()).hasSize(1);
-    assertThat(sender.getMessages().get(0).body()).contains("SSH keys have been deleted");
+      assertThat(sender.getMessages()).hasSize(1);
+      assertThat(sender.getMessages().get(0).body()).contains("SSH keys have been deleted");
 
-    // Mark first key as invalid
-    assertThat(info.get(0).valid).isTrue();
-    authorizedKeys.markKeyInvalid(admin.id(), 1);
-    info = gApi.accounts().self().listSshKeys();
-    assertThat(info).hasSize(2);
-    assertThat(info.get(0).seq).isEqualTo(1);
-    assertThat(info.get(0).valid).isFalse();
-    assertThat(info.get(1).seq).isEqualTo(3);
-    accountIndexedCounter.assertReindexOf(admin);
+      // Mark first key as invalid
+      assertThat(info.get(0).valid).isTrue();
+      authorizedKeys.markKeyInvalid(admin.id(), 1);
+      info = gApi.accounts().self().listSshKeys();
+      assertThat(info).hasSize(2);
+      assertThat(info.get(0).seq).isEqualTo(1);
+      assertThat(info.get(0).valid).isFalse();
+      assertThat(info.get(1).seq).isEqualTo(3);
+      accountIndexedCounter.assertReindexOf(admin);
+    }
   }
 
   @Test
   @UseSsh
   public void adminCanAddOrRemoveSshKeyOnOtherAccount() throws Exception {
-    // The test account should initially have exactly one ssh key
-    List<SshKeyInfo> info = gApi.accounts().self().listSshKeys();
-    assertThat(info).hasSize(1);
-    assertSequenceNumbers(info);
-    SshKeyInfo key = info.get(0);
-    KeyPair keyPair = sshKeys.getKeyPair(admin);
-    String initial = TestSshKeys.publicKey(keyPair, admin.email());
-    assertThat(key.sshPublicKey).isEqualTo(initial);
-    accountIndexedCounter.assertNoReindex();
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      // The test account should initially have exactly one ssh key
+      List<SshKeyInfo> info = gApi.accounts().self().listSshKeys();
+      assertThat(info).hasSize(1);
+      assertSequenceNumbers(info);
+      SshKeyInfo key = info.get(0);
+      KeyPair keyPair = sshKeys.getKeyPair(admin);
+      String initial = TestSshKeys.publicKey(keyPair, admin.email());
+      assertThat(key.sshPublicKey).isEqualTo(initial);
+      accountIndexedCounter.assertNoReindex();
 
-    // Add a new key
-    sender.clear();
-    String newKey = TestSshKeys.publicKey(TestSshKeys.genSshKey(), user.email());
-    gApi.accounts().id(user.username()).addSshKey(newKey);
-    info = gApi.accounts().id(user.username()).listSshKeys();
-    assertThat(info).hasSize(2);
-    assertSequenceNumbers(info);
-    accountIndexedCounter.assertReindexOf(user);
+      // Add a new key
+      sender.clear();
+      String newKey = TestSshKeys.publicKey(TestSshKeys.genSshKey(), user.email());
+      gApi.accounts().id(user.username()).addSshKey(newKey);
+      info = gApi.accounts().id(user.username()).listSshKeys();
+      assertThat(info).hasSize(2);
+      assertSequenceNumbers(info);
+      accountIndexedCounter.assertReindexOf(user);
 
-    assertThat(sender.getMessages()).hasSize(1);
-    Message message = sender.getMessages().get(0);
-    assertThat(message.rcpt()).containsExactly(user.getEmailAddress());
-    assertThat(message.body()).contains("new SSH keys have been added");
+      assertThat(sender.getMessages()).hasSize(1);
+      Message message = sender.getMessages().get(0);
+      assertThat(message.rcpt()).containsExactly(user.getEmailAddress());
+      assertThat(message.body()).contains("new SSH keys have been added");
 
-    // Delete key
-    sender.clear();
-    gApi.accounts().id(user.username()).deleteSshKey(1);
-    info = gApi.accounts().id(user.username()).listSshKeys();
-    assertThat(info).hasSize(1);
-    accountIndexedCounter.assertReindexOf(user);
+      // Delete key
+      sender.clear();
+      gApi.accounts().id(user.username()).deleteSshKey(1);
+      info = gApi.accounts().id(user.username()).listSshKeys();
+      assertThat(info).hasSize(1);
+      accountIndexedCounter.assertReindexOf(user);
 
-    assertThat(sender.getMessages()).hasSize(1);
-    message = sender.getMessages().get(0);
-    assertThat(message.rcpt()).containsExactly(user.getEmailAddress());
-    assertThat(message.body()).contains("SSH keys have been deleted");
+      assertThat(sender.getMessages()).hasSize(1);
+      message = sender.getMessages().get(0);
+      assertThat(message.rcpt()).containsExactly(user.getEmailAddress());
+      assertThat(message.body()).contains("SSH keys have been deleted");
+    }
   }
 
   @Test
@@ -2385,20 +2558,24 @@
   // reindex is tested by {@link AbstractQueryAccountsTest#reindex}
   @Test
   public void reindexPermissions() throws Exception {
-    // admin can reindex any account
-    requestScopeOperations.setApiUser(admin.id());
-    gApi.accounts().id(user.username()).index();
-    accountIndexedCounter.assertReindexOf(user);
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      // admin can reindex any account
+      requestScopeOperations.setApiUser(admin.id());
+      gApi.accounts().id(user.username()).index();
+      accountIndexedCounter.assertReindexOf(user);
 
-    // user can reindex own account
-    requestScopeOperations.setApiUser(user.id());
-    gApi.accounts().self().index();
-    accountIndexedCounter.assertReindexOf(user);
+      // user can reindex own account
+      requestScopeOperations.setApiUser(user.id());
+      gApi.accounts().self().index();
+      accountIndexedCounter.assertReindexOf(user);
 
-    // user cannot reindex any account
-    AuthException thrown =
-        assertThrows(AuthException.class, () -> gApi.accounts().id(admin.username()).index());
-    assertThat(thrown).hasMessageThat().contains("modify account not permitted");
+      // user cannot reindex any account
+      AuthException thrown =
+          assertThrows(AuthException.class, () -> gApi.accounts().id(admin.username()).index());
+      assertThat(thrown).hasMessageThat().contains("modify account not permitted");
+    }
   }
 
   @Test
@@ -3266,17 +3443,21 @@
   }
 
   private void addExternalIdEmail(TestAccount account, String email) throws Exception {
-    requireNonNull(email);
-    accountsUpdateProvider
-        .get()
-        .update(
-            "Add Email",
-            account.id(),
-            u ->
-                u.addExternalId(
-                    ExternalId.createWithEmail(name("test"), email, account.id(), email)));
-    accountIndexedCounter.assertReindexOf(account);
-    requestScopeOperations.setApiUser(account.id());
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      requireNonNull(email);
+      accountsUpdateProvider
+          .get()
+          .update(
+              "Add Email",
+              account.id(),
+              u ->
+                  u.addExternalId(
+                      ExternalId.createWithEmail(name("test"), email, account.id(), email)));
+      accountIndexedCounter.assertReindexOf(account);
+      requestScopeOperations.setApiUser(account.id());
+    }
   }
 
   private Map<String, GpgKeyInfo> addGpgKey(String armored) throws Exception {
@@ -3284,12 +3465,16 @@
   }
 
   private Map<String, GpgKeyInfo> addGpgKey(TestAccount account, String armored) throws Exception {
-    Map<String, GpgKeyInfo> gpgKeys =
-        gApi.accounts()
-            .id(account.username())
-            .putGpgKeys(ImmutableList.of(armored), ImmutableList.<String>of());
-    accountIndexedCounter.assertReindexOf(gApi.accounts().id(account.username()).get());
-    return gpgKeys;
+    AccountIndexedCounter accountIndexedCounter = new AccountIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(accountIndexedCounter)) {
+      Map<String, GpgKeyInfo> gpgKeys =
+          gApi.accounts()
+              .id(account.username())
+              .putGpgKeys(ImmutableList.of(armored), ImmutableList.<String>of());
+      accountIndexedCounter.assertReindexOf(gApi.accounts().id(account.username()).get());
+      return gpgKeys;
+    }
   }
 
   private Map<String, GpgKeyInfo> addGpgKeyNoReindex(String armored) throws Exception {
diff --git a/javatests/com/google/gerrit/acceptance/api/accounts/GeneralPreferencesIT.java b/javatests/com/google/gerrit/acceptance/api/accounts/GeneralPreferencesIT.java
index 76d8044..3b106a4 100644
--- a/javatests/com/google/gerrit/acceptance/api/accounts/GeneralPreferencesIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/accounts/GeneralPreferencesIT.java
@@ -19,6 +19,8 @@
 import static com.google.gerrit.testing.GerritJUnit.assertThrows;
 
 import com.google.gerrit.acceptance.AbstractDaemonTest;
+import com.google.gerrit.acceptance.ExtensionRegistry;
+import com.google.gerrit.acceptance.ExtensionRegistry.Registration;
 import com.google.gerrit.acceptance.NoHttpd;
 import com.google.gerrit.acceptance.TestAccount;
 import com.google.gerrit.extensions.client.GeneralPreferencesInfo;
@@ -31,19 +33,15 @@
 import com.google.gerrit.extensions.client.GeneralPreferencesInfo.TimeFormat;
 import com.google.gerrit.extensions.client.MenuItem;
 import com.google.gerrit.extensions.config.DownloadScheme;
-import com.google.gerrit.extensions.registration.DynamicMap;
-import com.google.gerrit.extensions.registration.PrivateInternals_DynamicMapImpl;
-import com.google.gerrit.extensions.registration.RegistrationHandle;
 import com.google.gerrit.extensions.restapi.BadRequestException;
 import com.google.inject.Inject;
-import com.google.inject.util.Providers;
 import java.util.ArrayList;
 import org.junit.Before;
 import org.junit.Test;
 
 @NoHttpd
 public class GeneralPreferencesIT extends AbstractDaemonTest {
-  @Inject private DynamicMap<DownloadScheme> downloadSchemes;
+  @Inject private ExtensionRegistry extensionRegistry;
 
   private TestAccount user42;
 
@@ -201,10 +199,8 @@
   @Test
   public void setDownloadScheme() throws Exception {
     String schemeName = "foo";
-    RegistrationHandle registrationHandle =
-        ((PrivateInternals_DynamicMapImpl<DownloadScheme>) downloadSchemes)
-            .put("myPlugin", schemeName, Providers.of(new TestDownloadScheme()));
-    try {
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(new TestDownloadScheme(), schemeName)) {
       GeneralPreferencesInfo i = GeneralPreferencesInfo.defaults();
       i.downloadScheme = schemeName;
 
@@ -213,8 +209,6 @@
 
       o = gApi.accounts().id(user42.id().toString()).getPreferences();
       assertThat(o.downloadScheme).isEqualTo(schemeName);
-    } finally {
-      registrationHandle.remove();
     }
   }
 
diff --git a/javatests/com/google/gerrit/acceptance/api/change/ChangeIT.java b/javatests/com/google/gerrit/acceptance/api/change/ChangeIT.java
index 61e7582..70d5e99 100644
--- a/javatests/com/google/gerrit/acceptance/api/change/ChangeIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/change/ChangeIT.java
@@ -72,6 +72,8 @@
 import com.google.common.truth.ThrowableSubject;
 import com.google.gerrit.acceptance.AbstractDaemonTest;
 import com.google.gerrit.acceptance.ChangeIndexedCounter;
+import com.google.gerrit.acceptance.ExtensionRegistry;
+import com.google.gerrit.acceptance.ExtensionRegistry.Registration;
 import com.google.gerrit.acceptance.GerritConfig;
 import com.google.gerrit.acceptance.GitUtil;
 import com.google.gerrit.acceptance.NoHttpd;
@@ -138,9 +140,6 @@
 import com.google.gerrit.extensions.common.PureRevertInfo;
 import com.google.gerrit.extensions.common.RevisionInfo;
 import com.google.gerrit.extensions.common.TrackingIdInfo;
-import com.google.gerrit.extensions.events.ChangeIndexedListener;
-import com.google.gerrit.extensions.registration.DynamicSet;
-import com.google.gerrit.extensions.registration.RegistrationHandle;
 import com.google.gerrit.extensions.restapi.AuthException;
 import com.google.gerrit.extensions.restapi.BadRequestException;
 import com.google.gerrit.extensions.restapi.MethodNotAllowedException;
@@ -161,9 +160,7 @@
 import com.google.gerrit.server.ChangeMessagesUtil;
 import com.google.gerrit.server.ChangeUtil;
 import com.google.gerrit.server.StarredChangesUtil;
-import com.google.gerrit.server.change.ChangeETagComputation;
 import com.google.gerrit.server.change.ChangeResource;
-import com.google.gerrit.server.git.ChangeMessageModifier;
 import com.google.gerrit.server.group.SystemGroupBackend;
 import com.google.gerrit.server.index.change.ChangeIndex;
 import com.google.gerrit.server.index.change.ChangeIndexCollection;
@@ -208,8 +205,6 @@
 import org.eclipse.jgit.revwalk.RevCommit;
 import org.eclipse.jgit.revwalk.RevWalk;
 import org.eclipse.jgit.transport.PushResult;
-import org.junit.After;
-import org.junit.Before;
 import org.junit.Test;
 
 @NoHttpd
@@ -218,13 +213,11 @@
 
   @Inject private AccountOperations accountOperations;
   @Inject private ChangeIndexCollection changeIndexCollection;
-  @Inject private DynamicSet<ChangeIndexedListener> changeIndexedListeners;
-  @Inject private DynamicSet<ChangeMessageModifier> changeMessageModifiers;
   @Inject private GroupOperations groupOperations;
   @Inject private IndexConfig indexConfig;
   @Inject private ProjectOperations projectOperations;
   @Inject private RequestScopeOperations requestScopeOperations;
-  @Inject private DynamicSet<ChangeETagComputation> changeETagComputations;
+  @Inject private ExtensionRegistry extensionRegistry;
 
   @Inject
   @Named("diff")
@@ -238,22 +231,6 @@
   @Named("diff_summary")
   private Cache<DiffSummaryKey, DiffSummary> diffSummaryCache;
 
-  private ChangeIndexedCounter changeIndexedCounter;
-  private RegistrationHandle changeIndexedCounterHandle;
-
-  @Before
-  public void addChangeIndexedCounter() {
-    changeIndexedCounter = new ChangeIndexedCounter();
-    changeIndexedCounterHandle = changeIndexedListeners.add("gerrit", changeIndexedCounter);
-  }
-
-  @After
-  public void removeChangeIndexedCounter() {
-    if (changeIndexedCounterHandle != null) {
-      changeIndexedCounterHandle.remove();
-    }
-  }
-
   @Test
   public void get() throws Exception {
     PushOneCommit.Result r = createChange();
@@ -785,6 +762,29 @@
   }
 
   @Test
+  public void revertWithDefaultTopic() throws Exception {
+    PushOneCommit.Result result = createChange();
+    gApi.changes().id(result.getChangeId()).current().review(ReviewInput.approve());
+    gApi.changes().id(result.getChangeId()).topic("topic");
+    gApi.changes().id(result.getChangeId()).revision(result.getCommit().name()).submit();
+    RevertInput revertInput = new RevertInput();
+    assertThat(gApi.changes().id(result.getChangeId()).revert(revertInput).topic())
+        .isEqualTo("topic");
+  }
+
+  @Test
+  public void revertWithSetTopic() throws Exception {
+    PushOneCommit.Result result = createChange();
+    gApi.changes().id(result.getChangeId()).current().review(ReviewInput.approve());
+    gApi.changes().id(result.getChangeId()).topic("topic");
+    gApi.changes().id(result.getChangeId()).revision(result.getCommit().name()).submit();
+    RevertInput revertInput = new RevertInput();
+    revertInput.topic = "reverted-not-default";
+    assertThat(gApi.changes().id(result.getChangeId()).revert(revertInput).topic())
+        .isEqualTo(revertInput.topic);
+  }
+
+  @Test
   public void revertNotifications() throws Exception {
     PushOneCommit.Result r = createChange();
     gApi.changes().id(r.getChangeId()).addReviewer(user.email());
@@ -2256,11 +2256,8 @@
     PushOneCommit.Result r = createChange();
     String oldETag = parseResource(r).getETag();
 
-    RegistrationHandle registrationHandle = changeETagComputations.add("gerrit", (p, id) -> "foo");
-    try {
+    try (Registration registration = extensionRegistry.newRegistration().add((p, id) -> "foo")) {
       assertThat(parseResource(r).getETag()).isNotEqualTo(oldETag);
-    } finally {
-      registrationHandle.remove();
     }
 
     assertThat(parseResource(r).getETag()).isEqualTo(oldETag);
@@ -2271,11 +2268,8 @@
     PushOneCommit.Result r = createChange();
     String oldETag = parseResource(r).getETag();
 
-    RegistrationHandle registrationHandle = changeETagComputations.add("gerrit", (p, id) -> null);
-    try {
+    try (Registration registration = extensionRegistry.newRegistration().add((p, id) -> null)) {
       assertThat(parseResource(r).getETag()).isEqualTo(oldETag);
-    } finally {
-      registrationHandle.remove();
     }
   }
 
@@ -2284,16 +2278,14 @@
     PushOneCommit.Result r = createChange();
     String oldETag = parseResource(r).getETag();
 
-    RegistrationHandle registrationHandle =
-        changeETagComputations.add(
-            "gerrit",
-            (p, id) -> {
-              throw new StorageException("exception during test");
-            });
-    try {
+    try (Registration registration =
+        extensionRegistry
+            .newRegistration()
+            .add(
+                (p, id) -> {
+                  throw new StorageException("exception during test");
+                })) {
       assertThat(parseResource(r).getETag()).isEqualTo(oldETag);
-    } finally {
-      registrationHandle.remove();
     }
   }
 
@@ -3060,18 +3052,16 @@
   @Test
   public void customCommitFooters() throws Exception {
     PushOneCommit.Result change = createChange();
-    RegistrationHandle handle =
-        changeMessageModifiers.add(
-            "gerrit",
-            (newCommitMessage, original, mergeTip, destination) -> {
-              assertThat(original.getName()).isNotEqualTo(mergeTip.getName());
-              return newCommitMessage + "Custom: " + destination.branch();
-            });
     ChangeInfo actual;
-    try {
+    try (Registration registration =
+        extensionRegistry
+            .newRegistration()
+            .add(
+                (newCommitMessage, original, mergeTip, destination) -> {
+                  assertThat(original.getName()).isNotEqualTo(mergeTip.getName());
+                  return newCommitMessage + "Custom: " + destination.branch();
+                })) {
       actual = gApi.changes().id(change.getChangeId()).get(ALL_REVISIONS, COMMIT_FOOTERS);
-    } finally {
-      handle.remove();
     }
     List<String> footers =
         new ArrayList<>(
@@ -4438,21 +4428,25 @@
 
   @Test
   public void starUnstar() throws Exception {
-    PushOneCommit.Result r = createChange();
-    String triplet = project.get() + "~master~" + r.getChangeId();
-    changeIndexedCounter.clear();
+    ChangeIndexedCounter changeIndexedCounter = new ChangeIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(changeIndexedCounter)) {
+      PushOneCommit.Result r = createChange();
+      String triplet = project.get() + "~master~" + r.getChangeId();
+      changeIndexedCounter.clear();
 
-    gApi.accounts().self().starChange(triplet);
-    ChangeInfo change = info(triplet);
-    assertThat(change.starred).isTrue();
-    assertThat(change.stars).contains(DEFAULT_LABEL);
-    changeIndexedCounter.assertReindexOf(change);
+      gApi.accounts().self().starChange(triplet);
+      ChangeInfo change = info(triplet);
+      assertThat(change.starred).isTrue();
+      assertThat(change.stars).contains(DEFAULT_LABEL);
+      changeIndexedCounter.assertReindexOf(change);
 
-    gApi.accounts().self().unstarChange(triplet);
-    change = info(triplet);
-    assertThat(change.starred).isNull();
-    assertThat(change.stars).isNull();
-    changeIndexedCounter.assertReindexOf(change);
+      gApi.accounts().self().unstarChange(triplet);
+      change = info(triplet);
+      assertThat(change.starred).isNull();
+      assertThat(change.stars).isNull();
+      changeIndexedCounter.assertReindexOf(change);
+    }
   }
 
   @Test
diff --git a/javatests/com/google/gerrit/acceptance/api/change/DisablePrivateChangesIT.java b/javatests/com/google/gerrit/acceptance/api/change/DisablePrivateChangesIT.java
index 57d7ece..42d62bd 100644
--- a/javatests/com/google/gerrit/acceptance/api/change/DisablePrivateChangesIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/change/DisablePrivateChangesIT.java
@@ -20,16 +20,11 @@
 import com.google.gerrit.acceptance.AbstractDaemonTest;
 import com.google.gerrit.acceptance.GerritConfig;
 import com.google.gerrit.acceptance.PushOneCommit;
-import com.google.gerrit.acceptance.testsuite.project.ProjectOperations;
 import com.google.gerrit.extensions.common.ChangeInput;
 import com.google.gerrit.extensions.restapi.MethodNotAllowedException;
-import com.google.inject.Inject;
-import org.eclipse.jgit.revwalk.RevCommit;
 import org.junit.Test;
 
 public class DisablePrivateChangesIT extends AbstractDaemonTest {
-  @Inject private ProjectOperations projectOperations;
-
   @Test
   @GerritConfig(name = "change.disablePrivateChanges", value = "true")
   public void createPrivateChangeWithDisablePrivateChangesTrue() throws Exception {
@@ -63,20 +58,6 @@
   }
 
   @Test
-  @GerritConfig(name = "change.allowDrafts", value = "true")
-  @GerritConfig(name = "change.disablePrivateChanges", value = "true")
-  public void pushDraftsWithDisablePrivateChangesTrue() throws Exception {
-    RevCommit initialHead = projectOperations.project(project).getHead("master");
-    PushOneCommit.Result result =
-        pushFactory.create(admin.newIdent(), testRepo).to("refs/for/master%draft");
-    result.assertErrorStatus();
-
-    testRepo.reset(initialHead);
-    result = pushFactory.create(admin.newIdent(), testRepo).to("refs/drafts/master");
-    result.assertErrorStatus();
-  }
-
-  @Test
   @GerritConfig(name = "change.disablePrivateChanges", value = "true")
   public void pushWithDisablePrivateChangesTrue() throws Exception {
     PushOneCommit.Result result =
@@ -86,27 +67,6 @@
   }
 
   @Test
-  @GerritConfig(name = "change.allowDrafts", value = "true")
-  public void pushPrivatesWithDisablePrivateChangesFalse() throws Exception {
-    PushOneCommit.Result result =
-        pushFactory.create(admin.newIdent(), testRepo).to("refs/for/master%private");
-    assertThat(result.getChange().change().isPrivate()).isTrue();
-  }
-
-  @Test
-  @GerritConfig(name = "change.allowDrafts", value = "true")
-  public void pushDraftsWithDisablePrivateChangesFalse() throws Exception {
-    RevCommit initialHead = projectOperations.project(project).getHead("master");
-    PushOneCommit.Result result =
-        pushFactory.create(admin.newIdent(), testRepo).to("refs/for/master%draft");
-    assertThat(result.getChange().change().isPrivate()).isTrue();
-
-    testRepo.reset(initialHead);
-    result = pushFactory.create(admin.newIdent(), testRepo).to("refs/drafts/master");
-    assertThat(result.getChange().change().isPrivate()).isTrue();
-  }
-
-  @Test
   @GerritConfig(name = "change.disablePrivateChanges", value = "true")
   public void setPrivateWithDisablePrivateChangesTrue() throws Exception {
     PushOneCommit.Result result = createChange();
diff --git a/javatests/com/google/gerrit/acceptance/api/change/StickyApprovalsIT.java b/javatests/com/google/gerrit/acceptance/api/change/StickyApprovalsIT.java
index 894e980..6e9ccdf 100644
--- a/javatests/com/google/gerrit/acceptance/api/change/StickyApprovalsIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/change/StickyApprovalsIT.java
@@ -119,6 +119,28 @@
   }
 
   @Test
+  public void stickyOnAnyScore() throws Exception {
+    try (ProjectConfigUpdate u = updateProject(project)) {
+      u.getConfig().getLabelSections().get("Code-Review").setCopyAnyScore(true);
+      u.save();
+    }
+
+    for (ChangeKind changeKind :
+        EnumSet.of(REWORK, TRIVIAL_REBASE, NO_CODE_CHANGE, MERGE_FIRST_PARENT_UPDATE, NO_CHANGE)) {
+      testRepo.reset(projectOperations.project(project).getHead("master"));
+
+      String changeId = createChange(changeKind);
+      vote(admin, changeId, 2, 1);
+      vote(user, changeId, 1, -1);
+
+      updateChange(changeId, changeKind);
+      ChangeInfo c = detailedChange(changeId);
+      assertVotes(c, admin, 2, 0, changeKind);
+      assertVotes(c, user, 1, 0, changeKind);
+    }
+  }
+
+  @Test
   public void stickyOnMinScore() throws Exception {
     try (ProjectConfigUpdate u = updateProject(project)) {
       u.getConfig().getLabelSections().get("Code-Review").setCopyMinScore(true);
diff --git a/javatests/com/google/gerrit/acceptance/api/group/GroupsIT.java b/javatests/com/google/gerrit/acceptance/api/group/GroupsIT.java
index 599a2b9..ba8bb7a 100644
--- a/javatests/com/google/gerrit/acceptance/api/group/GroupsIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/group/GroupsIT.java
@@ -38,6 +38,8 @@
 import com.google.common.truth.Correspondence;
 import com.google.common.util.concurrent.AtomicLongMap;
 import com.google.gerrit.acceptance.AbstractDaemonTest;
+import com.google.gerrit.acceptance.ExtensionRegistry;
+import com.google.gerrit.acceptance.ExtensionRegistry.Registration;
 import com.google.gerrit.acceptance.GerritConfig;
 import com.google.gerrit.acceptance.GitUtil;
 import com.google.gerrit.acceptance.NoHttpd;
@@ -66,8 +68,6 @@
 import com.google.gerrit.extensions.common.GroupInfo;
 import com.google.gerrit.extensions.common.GroupOptionsInfo;
 import com.google.gerrit.extensions.events.GroupIndexedListener;
-import com.google.gerrit.extensions.registration.DynamicSet;
-import com.google.gerrit.extensions.registration.RegistrationHandle;
 import com.google.gerrit.extensions.restapi.AuthException;
 import com.google.gerrit.extensions.restapi.BadRequestException;
 import com.google.gerrit.extensions.restapi.ResourceConflictException;
@@ -127,7 +127,6 @@
 public class GroupsIT extends AbstractDaemonTest {
   @Inject @ServerInitiated private GroupsUpdate groupsUpdate;
   @Inject private AccountOperations accountOperations;
-  @Inject private DynamicSet<GroupIndexedListener> groupIndexedListeners;
   @Inject private GroupIncludeCache groupIncludeCache;
   @Inject private GroupIndexer groupIndexer;
   @Inject private GroupOperations groupOperations;
@@ -138,6 +137,7 @@
   @Inject private RequestScopeOperations requestScopeOperations;
   @Inject private Sequences seq;
   @Inject private StalenessChecker stalenessChecker;
+  @Inject private ExtensionRegistry extensionRegistry;
 
   @After
   public void consistencyCheck() throws Exception {
@@ -1334,9 +1334,7 @@
     restartAsSlave();
 
     GroupIndexedCounter groupIndexedCounter = new GroupIndexedCounter();
-    RegistrationHandle groupIndexEventCounterHandle =
-        groupIndexedListeners.add("gerrit", groupIndexedCounter);
-    try {
+    try (Registration registration = extensionRegistry.newRegistration().add(groupIndexedCounter)) {
       // Running the reindexer right after startup should not need to reindex any group since
       // reindexing was already done on startup.
       slaveGroupIndexer.run();
@@ -1372,8 +1370,6 @@
       }
       slaveGroupIndexer.run();
       groupIndexedCounter.assertReindexOf(groupUuid);
-    } finally {
-      groupIndexEventCounterHandle.remove();
     }
   }
 
@@ -1391,14 +1387,10 @@
     restartAsSlave();
 
     GroupIndexedCounter groupIndexedCounter = new GroupIndexedCounter();
-    RegistrationHandle groupIndexEventCounterHandle =
-        groupIndexedListeners.add("gerrit", groupIndexedCounter);
-    try {
+    try (Registration registration = extensionRegistry.newRegistration().add(groupIndexedCounter)) {
       // No group indexing happened on startup. All groups should be reindexed now.
       slaveGroupIndexer.run();
       groupIndexedCounter.assertReindexOf(expectedGroups);
-    } finally {
-      groupIndexEventCounterHandle.remove();
     }
   }
 
diff --git a/javatests/com/google/gerrit/acceptance/api/project/ProjectIT.java b/javatests/com/google/gerrit/acceptance/api/project/ProjectIT.java
index 13ac0044..7ecd94e 100644
--- a/javatests/com/google/gerrit/acceptance/api/project/ProjectIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/project/ProjectIT.java
@@ -33,6 +33,8 @@
 import com.google.common.util.concurrent.AtomicLongMap;
 import com.google.common.util.concurrent.ListeningExecutorService;
 import com.google.gerrit.acceptance.AbstractDaemonTest;
+import com.google.gerrit.acceptance.ExtensionRegistry;
+import com.google.gerrit.acceptance.ExtensionRegistry.Registration;
 import com.google.gerrit.acceptance.GerritConfig;
 import com.google.gerrit.acceptance.GitUtil;
 import com.google.gerrit.acceptance.NoHttpd;
@@ -55,8 +57,6 @@
 import com.google.gerrit.extensions.common.ProjectInfo;
 import com.google.gerrit.extensions.events.ChangeIndexedListener;
 import com.google.gerrit.extensions.events.ProjectIndexedListener;
-import com.google.gerrit.extensions.registration.DynamicSet;
-import com.google.gerrit.extensions.registration.RegistrationHandle;
 import com.google.gerrit.extensions.restapi.AuthException;
 import com.google.gerrit.extensions.restapi.BadRequestException;
 import com.google.gerrit.extensions.restapi.ResourceConflictException;
@@ -76,8 +76,6 @@
 import org.eclipse.jgit.revwalk.RevCommit;
 import org.eclipse.jgit.transport.PushResult;
 import org.eclipse.jgit.transport.RemoteRefUpdate.Status;
-import org.junit.After;
-import org.junit.Before;
 import org.junit.Test;
 
 @NoHttpd
@@ -89,18 +87,14 @@
   private static final String JIRA_LINK = "http://jira.example.com/?id=$2";
   private static final String JIRA_MATCH = "(jira\\\\s+#?)(\\\\d+)";
 
-  @Inject private DynamicSet<ProjectIndexedListener> projectIndexedListeners;
-  @Inject private DynamicSet<ChangeIndexedListener> changeIndexedListeners;
   @Inject private ProjectOperations projectOperations;
   @Inject private RequestScopeOperations requestScopeOperations;
+  @Inject private ExtensionRegistry extensionRegistry;
 
   @Inject
   @IndexExecutor(BATCH)
   private ListeningExecutorService executor;
 
-  private ProjectIndexedCounter projectIndexedCounter;
-  private RegistrationHandle projectIndexedCounterHandle;
-
   @Override
   public Module createModule() {
     return new AbstractModule() {
@@ -113,53 +107,49 @@
     };
   }
 
-  @Before
-  public void addProjectIndexedCounter() {
-    projectIndexedCounter = new ProjectIndexedCounter();
-    projectIndexedCounterHandle = projectIndexedListeners.add("gerrit", projectIndexedCounter);
-  }
+  @Test
+  public void createProject() throws Exception {
+    ProjectIndexedCounter projectIndexedCounter = new ProjectIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectIndexedCounter)) {
+      String name = name("foo");
+      assertThat(gApi.projects().create(name).get().name).isEqualTo(name);
 
-  @After
-  public void removeProjectIndexedCounter() {
-    if (projectIndexedCounterHandle != null) {
-      projectIndexedCounterHandle.remove();
+      RevCommit head = getRemoteHead(name, RefNames.REFS_CONFIG);
+      eventRecorder.assertRefUpdatedEvents(name, RefNames.REFS_CONFIG, null, head);
+
+      eventRecorder.assertRefUpdatedEvents(name, "refs/heads/master", new String[] {});
+      projectIndexedCounter.assertReindexOf(name);
     }
   }
 
   @Test
-  public void createProject() throws Exception {
-    String name = name("foo");
-    assertThat(gApi.projects().create(name).get().name).isEqualTo(name);
-
-    RevCommit head = getRemoteHead(name, RefNames.REFS_CONFIG);
-    eventRecorder.assertRefUpdatedEvents(name, RefNames.REFS_CONFIG, null, head);
-
-    eventRecorder.assertRefUpdatedEvents(name, "refs/heads/master", new String[] {});
-    projectIndexedCounter.assertReindexOf(name);
-  }
-
-  @Test
   public void createProjectWithInitialBranches() throws Exception {
-    String name = name("foo");
-    ProjectInput input = new ProjectInput();
-    input.name = name;
-    input.createEmptyCommit = true;
-    input.branches = ImmutableList.of("master", "foo");
-    assertThat(gApi.projects().create(input).get().name).isEqualTo(name);
-    assertThat(
-            gApi.projects().name(name).branches().get().stream().map(b -> b.ref).collect(toSet()))
-        .containsExactly("refs/heads/foo", "refs/heads/master", "HEAD", RefNames.REFS_CONFIG);
+    ProjectIndexedCounter projectIndexedCounter = new ProjectIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectIndexedCounter)) {
 
-    RevCommit head = getRemoteHead(name, RefNames.REFS_CONFIG);
-    eventRecorder.assertRefUpdatedEvents(name, RefNames.REFS_CONFIG, null, head);
+      String name = name("foo");
+      ProjectInput input = new ProjectInput();
+      input.name = name;
+      input.createEmptyCommit = true;
+      input.branches = ImmutableList.of("master", "foo");
+      assertThat(gApi.projects().create(input).get().name).isEqualTo(name);
+      assertThat(
+              gApi.projects().name(name).branches().get().stream().map(b -> b.ref).collect(toSet()))
+          .containsExactly("refs/heads/foo", "refs/heads/master", "HEAD", RefNames.REFS_CONFIG);
 
-    head = getRemoteHead(name, "refs/heads/foo");
-    eventRecorder.assertRefUpdatedEvents(name, "refs/heads/foo", null, head);
+      RevCommit head = getRemoteHead(name, RefNames.REFS_CONFIG);
+      eventRecorder.assertRefUpdatedEvents(name, RefNames.REFS_CONFIG, null, head);
 
-    head = getRemoteHead(name, "refs/heads/master");
-    eventRecorder.assertRefUpdatedEvents(name, "refs/heads/master", null, head);
+      head = getRemoteHead(name, "refs/heads/foo");
+      eventRecorder.assertRefUpdatedEvents(name, "refs/heads/foo", null, head);
 
-    projectIndexedCounter.assertReindexOf(name);
+      head = getRemoteHead(name, "refs/heads/master");
+      eventRecorder.assertRefUpdatedEvents(name, "refs/heads/master", null, head);
+
+      projectIndexedCounter.assertReindexOf(name);
+    }
   }
 
   @Test
@@ -262,37 +252,46 @@
 
   @Test
   public void createAndDeleteBranch() throws Exception {
-    assertThat(hasHead(project, "foo")).isFalse();
+    ProjectIndexedCounter projectIndexedCounter = new ProjectIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectIndexedCounter)) {
 
-    gApi.projects().name(project.get()).branch("foo").create(new BranchInput());
-    assertThat(getRemoteHead(project.get(), "foo")).isNotNull();
-    projectIndexedCounter.assertNoReindex();
+      assertThat(hasHead(project, "foo")).isFalse();
 
-    gApi.projects().name(project.get()).branch("foo").delete();
-    assertThat(hasHead(project, "foo")).isFalse();
-    projectIndexedCounter.assertNoReindex();
+      gApi.projects().name(project.get()).branch("foo").create(new BranchInput());
+      assertThat(getRemoteHead(project.get(), "foo")).isNotNull();
+      projectIndexedCounter.assertNoReindex();
+
+      gApi.projects().name(project.get()).branch("foo").delete();
+      assertThat(hasHead(project, "foo")).isFalse();
+      projectIndexedCounter.assertNoReindex();
+    }
   }
 
   @Test
   public void createAndDeleteBranchByPush() throws Exception {
-    projectOperations
-        .project(project)
-        .forUpdate()
-        .add(allow(Permission.PUSH).ref("refs/*").group(adminGroupUuid()).force(true))
-        .update();
-    projectIndexedCounter.clear();
+    ProjectIndexedCounter projectIndexedCounter = new ProjectIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectIndexedCounter)) {
+      projectOperations
+          .project(project)
+          .forUpdate()
+          .add(allow(Permission.PUSH).ref("refs/*").group(adminGroupUuid()).force(true))
+          .update();
+      projectIndexedCounter.clear();
 
-    assertThat(hasHead(project, "foo")).isFalse();
+      assertThat(hasHead(project, "foo")).isFalse();
 
-    PushOneCommit.Result r = pushTo("refs/heads/foo");
-    r.assertOkStatus();
-    assertThat(getRemoteHead(project.get(), "foo")).isEqualTo(r.getCommit());
-    projectIndexedCounter.assertNoReindex();
+      PushOneCommit.Result r = pushTo("refs/heads/foo");
+      r.assertOkStatus();
+      assertThat(getRemoteHead(project.get(), "foo")).isEqualTo(r.getCommit());
+      projectIndexedCounter.assertNoReindex();
 
-    PushResult r2 = GitUtil.pushOne(testRepo, null, "refs/heads/foo", false, true, null);
-    assertThat(r2.getRemoteUpdate("refs/heads/foo").getStatus()).isEqualTo(Status.OK);
-    assertThat(hasHead(project, "foo")).isFalse();
-    projectIndexedCounter.assertNoReindex();
+      PushResult r2 = GitUtil.pushOne(testRepo, null, "refs/heads/foo", false, true, null);
+      assertThat(r2.getRemoteUpdate("refs/heads/foo").getStatus()).isEqualTo(Status.OK);
+      assertThat(hasHead(project, "foo")).isFalse();
+      projectIndexedCounter.assertNoReindex();
+    }
   }
 
   @Test
@@ -489,22 +488,32 @@
 
   @Test
   public void reindexProject() throws Exception {
-    projectOperations.newProject().parent(project).create();
-    projectIndexedCounter.clear();
+    ProjectIndexedCounter projectIndexedCounter = new ProjectIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectIndexedCounter)) {
 
-    gApi.projects().name(allProjects.get()).index(false);
-    projectIndexedCounter.assertReindexOf(allProjects.get());
+      projectOperations.newProject().parent(project).create();
+      projectIndexedCounter.clear();
+
+      gApi.projects().name(allProjects.get()).index(false);
+      projectIndexedCounter.assertReindexOf(allProjects.get());
+    }
   }
 
   @Test
   public void reindexProjectWithChildren() throws Exception {
-    Project.NameKey middle = projectOperations.newProject().parent(project).create();
-    Project.NameKey leave = projectOperations.newProject().parent(middle).create();
-    projectIndexedCounter.clear();
+    ProjectIndexedCounter projectIndexedCounter = new ProjectIndexedCounter();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectIndexedCounter)) {
 
-    gApi.projects().name(project.get()).index(true);
-    projectIndexedCounter.assertReindexExactly(
-        ImmutableMap.of(project.get(), 1L, middle.get(), 1L, leave.get(), 1L));
+      Project.NameKey middle = projectOperations.newProject().parent(project).create();
+      Project.NameKey leave = projectOperations.newProject().parent(middle).create();
+      projectIndexedCounter.clear();
+
+      gApi.projects().name(project.get()).index(true);
+      projectIndexedCounter.assertReindexExactly(
+          ImmutableMap.of(project.get(), 1L, middle.get(), 1L, leave.get(), 1L));
+    }
   }
 
   @Test
@@ -513,17 +522,14 @@
     Change.Id changeId2 = createChange().getChange().getId();
 
     ChangeIndexedListener changeIndexedListener = mock(ChangeIndexedListener.class);
-    RegistrationHandle registrationHandle =
-        changeIndexedListeners.add("gerrit", changeIndexedListener);
-    try {
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(changeIndexedListener)) {
       gApi.projects().name(project.get()).indexChanges();
 
       verify(changeIndexedListener, times(1))
           .onChangeScheduledForIndexing(project.get(), changeId1.get());
       verify(changeIndexedListener, times(1))
           .onChangeScheduledForIndexing(project.get(), changeId2.get());
-    } finally {
-      registrationHandle.remove();
     }
   }
 
diff --git a/javatests/com/google/gerrit/acceptance/api/revision/RevisionIT.java b/javatests/com/google/gerrit/acceptance/api/revision/RevisionIT.java
index 2087f939..b7517a0 100644
--- a/javatests/com/google/gerrit/acceptance/api/revision/RevisionIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/revision/RevisionIT.java
@@ -40,6 +40,8 @@
 import com.google.common.collect.Iterators;
 import com.google.common.collect.ListMultimap;
 import com.google.gerrit.acceptance.AbstractDaemonTest;
+import com.google.gerrit.acceptance.ExtensionRegistry;
+import com.google.gerrit.acceptance.ExtensionRegistry.Registration;
 import com.google.gerrit.acceptance.PushOneCommit;
 import com.google.gerrit.acceptance.RestResponse;
 import com.google.gerrit.acceptance.TestAccount;
@@ -117,11 +119,11 @@
 import org.junit.Test;
 
 public class RevisionIT extends AbstractDaemonTest {
-  @Inject private DynamicSet<ChangeIndexedListener> changeIndexedListeners;
   @Inject private DynamicSet<PatchSetWebLink> patchSetLinks;
   @Inject private GetRevisionActions getRevisionActions;
   @Inject private ProjectOperations projectOperations;
   @Inject private RequestScopeOperations requestScopeOperations;
+  @Inject private ExtensionRegistry extensionRegistry;
 
   @Test
   public void reviewTriplet() throws Exception {
@@ -1079,25 +1081,22 @@
 
     // Using the API returns the correct value, and reindexes as well.
     CountDownLatch reindexed = new CountDownLatch(1);
-    RegistrationHandle handle =
-        changeIndexedListeners.add(
-            "gerrit",
-            new ChangeIndexedListener() {
-              @Override
-              public void onChangeIndexed(String projectName, int id) {
-                if (id == id2.get()) {
-                  reindexed.countDown();
-                }
-              }
+    ChangeIndexedListener listener =
+        new ChangeIndexedListener() {
+          @Override
+          public void onChangeIndexed(String projectName, int id) {
+            if (id == id2.get()) {
+              reindexed.countDown();
+            }
+          }
 
-              @Override
-              public void onChangeDeleted(int id) {}
-            });
-    try {
+          @Override
+          public void onChangeDeleted(int id) {}
+        };
+
+    try (Registration registration = extensionRegistry.newRegistration().add(listener)) {
       assertMergeable(r2.getChangeId(), true);
       reindexed.await();
-    } finally {
-      handle.remove();
     }
 
     List<ChangeInfo> changes = search.call();
diff --git a/javatests/com/google/gerrit/acceptance/git/AbstractPushForReview.java b/javatests/com/google/gerrit/acceptance/git/AbstractPushForReview.java
index 564a29b..e8ab515 100644
--- a/javatests/com/google/gerrit/acceptance/git/AbstractPushForReview.java
+++ b/javatests/com/google/gerrit/acceptance/git/AbstractPushForReview.java
@@ -53,7 +53,6 @@
 import com.google.gerrit.acceptance.GerritConfig;
 import com.google.gerrit.acceptance.GitUtil;
 import com.google.gerrit.acceptance.PushOneCommit;
-import com.google.gerrit.acceptance.Sandboxed;
 import com.google.gerrit.acceptance.SkipProjectClone;
 import com.google.gerrit.acceptance.TestAccount;
 import com.google.gerrit.acceptance.TestProjectInput;
@@ -83,7 +82,6 @@
 import com.google.gerrit.extensions.common.EditInfo;
 import com.google.gerrit.extensions.common.LabelInfo;
 import com.google.gerrit.extensions.common.RevisionInfo;
-import com.google.gerrit.extensions.common.testing.EditInfoSubject;
 import com.google.gerrit.extensions.registration.DynamicSet;
 import com.google.gerrit.extensions.registration.RegistrationHandle;
 import com.google.gerrit.git.ObjectIds;
@@ -2199,53 +2197,6 @@
     amendChanges(unChanged.toObjectId(), commits, "refs/for/master%publish-comments");
   }
 
-  @Test
-  public void pushWithDraftOptionIsDisabledPerDefault() throws Exception {
-    for (String ref : ImmutableSet.of("refs/drafts/master", "refs/for/master%draft")) {
-      PushOneCommit.Result r = pushTo(ref);
-      r.assertErrorStatus();
-      r.assertMessage("draft workflow is disabled");
-    }
-  }
-
-  @GerritConfig(name = "change.allowDrafts", value = "true")
-  @Test
-  public void pushDraftGetsPrivateChange() throws Exception {
-    String changeId1 = createChange("refs/drafts/master").getChangeId();
-    String changeId2 = createChange("refs/for/master%draft").getChangeId();
-
-    ChangeInfo info1 = gApi.changes().id(changeId1).get();
-    ChangeInfo info2 = gApi.changes().id(changeId2).get();
-
-    assertThat(info1.status).isEqualTo(ChangeStatus.NEW);
-    assertThat(info2.status).isEqualTo(ChangeStatus.NEW);
-    assertThat(info1.isPrivate).isTrue();
-    assertThat(info2.isPrivate).isTrue();
-    assertThat(info1.revisions).hasSize(1);
-    assertThat(info2.revisions).hasSize(1);
-  }
-
-  @GerritConfig(name = "change.allowDrafts", value = "true")
-  @Sandboxed
-  @Test
-  public void pushWithDraftOptionToExistingNewChangeGetsChangeEdit() throws Exception {
-    String changeId = createChange().getChangeId();
-    EditInfoSubject.assertThat(getEdit(changeId)).isAbsent();
-
-    ChangeInfo changeInfo = gApi.changes().id(changeId).get();
-    ChangeStatus originalChangeStatus = changeInfo.status;
-
-    PushOneCommit.Result result = amendChange(changeId, "refs/drafts/master");
-    result.assertOkStatus();
-
-    changeInfo = gApi.changes().id(changeId).get();
-    assertThat(changeInfo.status).isEqualTo(originalChangeStatus);
-    assertThat(changeInfo.isPrivate).isNull();
-    assertThat(changeInfo.revisions).hasSize(1);
-
-    EditInfoSubject.assertThat(getEdit(changeId)).isPresent();
-  }
-
   @GerritConfig(name = "receive.maxBatchCommits", value = "2")
   @Test
   public void maxBatchCommits() throws Exception {
diff --git a/javatests/com/google/gerrit/acceptance/git/RefAdvertisementIT.java b/javatests/com/google/gerrit/acceptance/git/RefAdvertisementIT.java
index 88fc557..f2d0a1c 100644
--- a/javatests/com/google/gerrit/acceptance/git/RefAdvertisementIT.java
+++ b/javatests/com/google/gerrit/acceptance/git/RefAdvertisementIT.java
@@ -1027,7 +1027,7 @@
 
   @Test
   public void receivePackListsOpenChangesAsAdditionalHaves() throws Exception {
-    TestRefAdvertiser.Result r = getReceivePackRefs(admin);
+    TestRefAdvertiser.Result r = getReceivePackRefs();
     assertThat(r.allRefs().keySet())
         .containsExactly(
             // meta refs are excluded
@@ -1050,7 +1050,7 @@
         .update();
     requestScopeOperations.setApiUser(user.id());
 
-    assertThat(getReceivePackRefs(user).additionalHaves()).containsExactly(obj(cd3, 1));
+    assertThat(getReceivePackRefs().additionalHaves()).containsExactly(obj(cd3, 1));
   }
 
   @Test
@@ -1059,8 +1059,7 @@
     PushOneCommit.Result r = amendChange(cd3.change().getKey().get());
     r.assertOkStatus();
     cd3 = r.getChange();
-    assertThat(getReceivePackRefs(admin).additionalHaves())
-        .containsExactly(obj(cd3, 2), obj(cd4, 1));
+    assertThat(getReceivePackRefs().additionalHaves()).containsExactly(obj(cd3, 2), obj(cd4, 1));
   }
 
   @Test
@@ -1098,7 +1097,7 @@
       indexer.index(c.getProject(), c.getId());
     }
 
-    assertThat(getReceivePackRefs(admin).additionalHaves()).containsExactly(obj(cd4, 1));
+    assertThat(getReceivePackRefs().additionalHaves()).containsExactly(obj(cd4, 1));
   }
 
   @Test
@@ -1444,11 +1443,10 @@
     }
   }
 
-  private TestRefAdvertiser.Result getReceivePackRefs(TestAccount u) throws Exception {
+  private TestRefAdvertiser.Result getReceivePackRefs() throws Exception {
     try (Repository repo = repoManager.openRepository(project)) {
       AdvertiseRefsHook adv =
-          ReceiveCommitsAdvertiseRefsHookChain.createForTest(
-              newFilter(project, u), queryProvider, project);
+          ReceiveCommitsAdvertiseRefsHookChain.createForTest(queryProvider, project);
       ReceivePack rp = new ReceivePack(repo);
       rp.setAdvertiseRefsHook(adv);
       TestRefAdvertiser advertiser = new TestRefAdvertiser(repo);
diff --git a/javatests/com/google/gerrit/acceptance/git/RefOperationValidationIT.java b/javatests/com/google/gerrit/acceptance/git/RefOperationValidationIT.java
index 640f65e..876e342 100644
--- a/javatests/com/google/gerrit/acceptance/git/RefOperationValidationIT.java
+++ b/javatests/com/google/gerrit/acceptance/git/RefOperationValidationIT.java
@@ -26,12 +26,12 @@
 import static org.eclipse.jgit.transport.ReceiveCommand.Type.UPDATE_NONFASTFORWARD;
 
 import com.google.gerrit.acceptance.AbstractDaemonTest;
+import com.google.gerrit.acceptance.ExtensionRegistry;
+import com.google.gerrit.acceptance.ExtensionRegistry.Registration;
 import com.google.gerrit.acceptance.PushOneCommit;
 import com.google.gerrit.acceptance.testsuite.project.ProjectOperations;
 import com.google.gerrit.common.data.Permission;
 import com.google.gerrit.extensions.api.projects.BranchInput;
-import com.google.gerrit.extensions.registration.DynamicSet;
-import com.google.gerrit.extensions.registration.RegistrationHandle;
 import com.google.gerrit.extensions.restapi.RestApiException;
 import com.google.gerrit.server.events.RefReceivedEvent;
 import com.google.gerrit.server.git.validators.RefOperationValidationListener;
@@ -50,18 +50,16 @@
 public class RefOperationValidationIT extends AbstractDaemonTest {
   private static final String TEST_REF = "refs/heads/protected";
 
-  @Inject DynamicSet<RefOperationValidationListener> validators;
   @Inject private ProjectOperations projectOperations;
+  @Inject private ExtensionRegistry extensionRegistry;
 
-  private class TestRefValidator implements RefOperationValidationListener, AutoCloseable {
+  private static class TestRefValidator implements RefOperationValidationListener {
     private final ReceiveCommand.Type rejectType;
     private final String rejectRef;
-    private final RegistrationHandle handle;
 
     public TestRefValidator(ReceiveCommand.Type rejectType) {
       this.rejectType = rejectType;
       this.rejectRef = TEST_REF;
-      this.handle = validators.add("test-" + rejectType.name(), this);
     }
 
     @Override
@@ -73,16 +71,15 @@
       }
       return Collections.emptyList();
     }
+  }
 
-    @Override
-    public void close() throws Exception {
-      handle.remove();
-    }
+  private Registration testValidator(ReceiveCommand.Type rejectType) {
+    return extensionRegistry.newRegistration().add(new TestRefValidator(rejectType));
   }
 
   @Test
   public void rejectRefCreation() throws Exception {
-    try (TestRefValidator validator = new TestRefValidator(CREATE)) {
+    try (Registration registration = testValidator(CREATE)) {
       RestApiException expected =
           assertThrows(
               RestApiException.class,
@@ -101,7 +98,7 @@
 
   @Test
   public void rejectRefCreationByPush() throws Exception {
-    try (TestRefValidator validator = new TestRefValidator(CREATE)) {
+    try (Registration registration = testValidator(CREATE)) {
       grant(Permission.PUSH);
       PushOneCommit push1 =
           pushFactory.create(admin.newIdent(), testRepo, "change1", "a.txt", "content");
@@ -115,7 +112,7 @@
   @Test
   public void rejectRefDeletion() throws Exception {
     gApi.projects().name(project.get()).branch(TEST_REF).create(new BranchInput());
-    try (TestRefValidator validator = new TestRefValidator(DELETE)) {
+    try (Registration registration = testValidator(DELETE)) {
       RestApiException expected =
           assertThrows(
               RestApiException.class,
@@ -128,7 +125,7 @@
   public void rejectRefDeletionByPush() throws Exception {
     gApi.projects().name(project.get()).branch(TEST_REF).create(new BranchInput());
     grant(Permission.DELETE);
-    try (TestRefValidator validator = new TestRefValidator(DELETE)) {
+    try (Registration registration = testValidator(DELETE)) {
       PushResult result = deleteRef(testRepo, TEST_REF);
       RemoteRefUpdate refUpdate = result.getRemoteUpdate(TEST_REF);
       assertThat(refUpdate.getMessage()).contains(DELETE.name());
@@ -138,7 +135,7 @@
   @Test
   public void rejectRefUpdateFastForward() throws Exception {
     gApi.projects().name(project.get()).branch(TEST_REF).create(new BranchInput());
-    try (TestRefValidator validator = new TestRefValidator(UPDATE)) {
+    try (Registration registration = testValidator(UPDATE)) {
       grant(Permission.PUSH);
       PushOneCommit push1 =
           pushFactory.create(admin.newIdent(), testRepo, "change1", "a.txt", "content");
@@ -150,7 +147,7 @@
   @Test
   public void rejectRefUpdateNonFastForward() throws Exception {
     gApi.projects().name(project.get()).branch(TEST_REF).create(new BranchInput());
-    try (TestRefValidator validator = new TestRefValidator(UPDATE_NONFASTFORWARD)) {
+    try (Registration registration = testValidator(UPDATE_NONFASTFORWARD)) {
       ObjectId initial = repo().exactRef(HEAD).getLeaf().getObjectId();
       grant(Permission.PUSH);
       PushOneCommit push1 =
@@ -175,7 +172,7 @@
   public void rejectRefUpdateNonFastForwardToExistingCommit() throws Exception {
     gApi.projects().name(project.get()).branch(TEST_REF).create(new BranchInput());
 
-    try (TestRefValidator validator = new TestRefValidator(UPDATE_NONFASTFORWARD)) {
+    try (Registration registration = testValidator(UPDATE_NONFASTFORWARD)) {
       grant(Permission.PUSH);
       PushOneCommit push1 =
           pushFactory.create(admin.newIdent(), testRepo, "change1", "a.txt", "content");
diff --git a/javatests/com/google/gerrit/acceptance/rest/TraceIT.java b/javatests/com/google/gerrit/acceptance/rest/TraceIT.java
index 0e51208..52de5ad 100644
--- a/javatests/com/google/gerrit/acceptance/rest/TraceIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/TraceIT.java
@@ -26,14 +26,14 @@
 import com.google.common.collect.Iterables;
 import com.google.common.truth.Expect;
 import com.google.gerrit.acceptance.AbstractDaemonTest;
+import com.google.gerrit.acceptance.ExtensionRegistry;
+import com.google.gerrit.acceptance.ExtensionRegistry.Registration;
 import com.google.gerrit.acceptance.GerritConfig;
 import com.google.gerrit.acceptance.PushOneCommit;
 import com.google.gerrit.acceptance.RestResponse;
 import com.google.gerrit.common.data.SubmitRecord;
 import com.google.gerrit.extensions.api.changes.ReviewInput;
 import com.google.gerrit.extensions.events.ChangeIndexedListener;
-import com.google.gerrit.extensions.registration.DynamicSet;
-import com.google.gerrit.extensions.registration.RegistrationHandle;
 import com.google.gerrit.httpd.restapi.ParameterParser;
 import com.google.gerrit.httpd.restapi.RestApiServlet;
 import com.google.gerrit.server.ExceptionHook;
@@ -58,8 +58,6 @@
 import java.util.SortedMap;
 import java.util.SortedSet;
 import org.apache.http.message.BasicHeader;
-import org.junit.After;
-import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
 
@@ -81,50 +79,24 @@
 public class TraceIT extends AbstractDaemonTest {
   @Rule public final Expect expect = Expect.create();
 
-  @Inject private DynamicSet<ProjectCreationValidationListener> projectCreationValidationListeners;
-  @Inject private DynamicSet<CommitValidationListener> commitValidationListeners;
-  @Inject private DynamicSet<ChangeIndexedListener> changeIndexedListeners;
-  @Inject private DynamicSet<PerformanceLogger> performanceLoggers;
-  @Inject private DynamicSet<SubmitRule> submitRules;
-  @Inject private DynamicSet<ExceptionHook> exceptionHooks;
+  @Inject private ExtensionRegistry extensionRegistry;
   @Inject private WorkQueue workQueue;
 
-  private TraceValidatingProjectCreationValidationListener projectCreationListener;
-  private RegistrationHandle projectCreationListenerRegistrationHandle;
-  private TraceValidatingCommitValidationListener commitValidationListener;
-  private RegistrationHandle commitValidationRegistrationHandle;
-  private TestPerformanceLogger testPerformanceLogger;
-  private RegistrationHandle performanceLoggerRegistrationHandle;
-
-  @Before
-  public void setup() {
-    projectCreationListener = new TraceValidatingProjectCreationValidationListener();
-    projectCreationListenerRegistrationHandle =
-        projectCreationValidationListeners.add("gerrit", projectCreationListener);
-    commitValidationListener = new TraceValidatingCommitValidationListener();
-    commitValidationRegistrationHandle =
-        commitValidationListeners.add("gerrit", commitValidationListener);
-    testPerformanceLogger = new TestPerformanceLogger();
-    performanceLoggerRegistrationHandle = performanceLoggers.add("gerrit", testPerformanceLogger);
-  }
-
-  @After
-  public void cleanup() {
-    projectCreationListenerRegistrationHandle.remove();
-    commitValidationRegistrationHandle.remove();
-    performanceLoggerRegistrationHandle.remove();
-  }
-
   @Test
   public void restCallWithoutTrace() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new1");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isNull();
-    assertThat(projectCreationListener.isLoggingForced).isFalse();
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new1");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isNull();
+      assertThat(projectCreationListener.isLoggingForced).isFalse();
 
-    // The logging tag with the project name is also set if tracing is off.
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new1");
+      // The logging tag with the project name is also set if tracing is off.
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new1");
+    }
   }
 
   @Test
@@ -132,9 +104,8 @@
     String changeId = createChange().getChangeId();
 
     TraceChangeIndexedListener changeIndexedListener = new TraceChangeIndexedListener();
-    RegistrationHandle registrationHandle =
-        changeIndexedListeners.add("gerrit", changeIndexedListener);
-    try {
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(changeIndexedListener)) {
       RestResponse response =
           adminRestSession.post(
               "/changes/" + changeId + "/revisions/current/review", ReviewInput.approve());
@@ -142,169 +113,223 @@
 
       // The logging tag with the project name is also set if tracing is off.
       assertThat(changeIndexedListener.tags.get("project")).containsExactly(project.get());
-    } finally {
-      registrationHandle.remove();
     }
   }
 
   @Test
   public void restCallWithTraceRequestParam() throws Exception {
-    RestResponse response =
-        adminRestSession.put("/projects/new2?" + ParameterParser.TRACE_PARAMETER);
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNotNull();
-    assertThat(projectCreationListener.traceId).isNotNull();
-    assertThat(projectCreationListener.isLoggingForced).isTrue();
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new2");
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response =
+          adminRestSession.put("/projects/new2?" + ParameterParser.TRACE_PARAMETER);
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNotNull();
+      assertThat(projectCreationListener.traceId).isNotNull();
+      assertThat(projectCreationListener.isLoggingForced).isTrue();
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new2");
+    }
   }
 
   @Test
   public void restCallWithTraceRequestParamAndProvidedTraceId() throws Exception {
-    RestResponse response =
-        adminRestSession.put("/projects/new3?" + ParameterParser.TRACE_PARAMETER + "=issue/123");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isEqualTo("issue/123");
-    assertThat(projectCreationListener.traceId).isEqualTo("issue/123");
-    assertThat(projectCreationListener.isLoggingForced).isTrue();
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new3");
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response =
+          adminRestSession.put("/projects/new3?" + ParameterParser.TRACE_PARAMETER + "=issue/123");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isEqualTo("issue/123");
+      assertThat(projectCreationListener.traceId).isEqualTo("issue/123");
+      assertThat(projectCreationListener.isLoggingForced).isTrue();
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new3");
+    }
   }
 
   @Test
   public void restCallWithTraceHeader() throws Exception {
-    RestResponse response =
-        adminRestSession.putWithHeader(
-            "/projects/new4", new BasicHeader(RestApiServlet.X_GERRIT_TRACE, null));
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNotNull();
-    assertThat(projectCreationListener.traceId).isNotNull();
-    assertThat(projectCreationListener.isLoggingForced).isTrue();
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new4");
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response =
+          adminRestSession.putWithHeader(
+              "/projects/new4", new BasicHeader(RestApiServlet.X_GERRIT_TRACE, null));
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNotNull();
+      assertThat(projectCreationListener.traceId).isNotNull();
+      assertThat(projectCreationListener.isLoggingForced).isTrue();
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new4");
+    }
   }
 
   @Test
   public void restCallWithTraceHeaderAndProvidedTraceId() throws Exception {
-    RestResponse response =
-        adminRestSession.putWithHeader(
-            "/projects/new5", new BasicHeader(RestApiServlet.X_GERRIT_TRACE, "issue/123"));
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isEqualTo("issue/123");
-    assertThat(projectCreationListener.traceId).isEqualTo("issue/123");
-    assertThat(projectCreationListener.isLoggingForced).isTrue();
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new5");
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response =
+          adminRestSession.putWithHeader(
+              "/projects/new5", new BasicHeader(RestApiServlet.X_GERRIT_TRACE, "issue/123"));
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isEqualTo("issue/123");
+      assertThat(projectCreationListener.traceId).isEqualTo("issue/123");
+      assertThat(projectCreationListener.isLoggingForced).isTrue();
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new5");
+    }
   }
 
   @Test
   public void restCallWithTraceRequestParamAndTraceHeader() throws Exception {
-    // trace ID only specified by trace header
-    RestResponse response =
-        adminRestSession.putWithHeader(
-            "/projects/new6?trace", new BasicHeader(RestApiServlet.X_GERRIT_TRACE, "issue/123"));
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isEqualTo("issue/123");
-    assertThat(projectCreationListener.traceId).isEqualTo("issue/123");
-    assertThat(projectCreationListener.isLoggingForced).isTrue();
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new6");
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      // trace ID only specified by trace header
+      RestResponse response =
+          adminRestSession.putWithHeader(
+              "/projects/new6?trace", new BasicHeader(RestApiServlet.X_GERRIT_TRACE, "issue/123"));
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isEqualTo("issue/123");
+      assertThat(projectCreationListener.traceId).isEqualTo("issue/123");
+      assertThat(projectCreationListener.isLoggingForced).isTrue();
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new6");
 
-    // trace ID only specified by trace request parameter
-    response =
-        adminRestSession.putWithHeader(
-            "/projects/new7?trace=issue/123", new BasicHeader(RestApiServlet.X_GERRIT_TRACE, null));
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isEqualTo("issue/123");
-    assertThat(projectCreationListener.traceId).isEqualTo("issue/123");
-    assertThat(projectCreationListener.isLoggingForced).isTrue();
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new7");
+      // trace ID only specified by trace request parameter
+      response =
+          adminRestSession.putWithHeader(
+              "/projects/new7?trace=issue/123",
+              new BasicHeader(RestApiServlet.X_GERRIT_TRACE, null));
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isEqualTo("issue/123");
+      assertThat(projectCreationListener.traceId).isEqualTo("issue/123");
+      assertThat(projectCreationListener.isLoggingForced).isTrue();
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new7");
 
-    // same trace ID specified by trace header and trace request parameter
-    response =
-        adminRestSession.putWithHeader(
-            "/projects/new8?trace=issue/123",
-            new BasicHeader(RestApiServlet.X_GERRIT_TRACE, "issue/123"));
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isEqualTo("issue/123");
-    assertThat(projectCreationListener.traceId).isEqualTo("issue/123");
-    assertThat(projectCreationListener.isLoggingForced).isTrue();
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new8");
+      // same trace ID specified by trace header and trace request parameter
+      response =
+          adminRestSession.putWithHeader(
+              "/projects/new8?trace=issue/123",
+              new BasicHeader(RestApiServlet.X_GERRIT_TRACE, "issue/123"));
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isEqualTo("issue/123");
+      assertThat(projectCreationListener.traceId).isEqualTo("issue/123");
+      assertThat(projectCreationListener.isLoggingForced).isTrue();
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new8");
 
-    // different trace IDs specified by trace header and trace request parameter
-    response =
-        adminRestSession.putWithHeader(
-            "/projects/new9?trace=issue/123",
-            new BasicHeader(RestApiServlet.X_GERRIT_TRACE, "issue/456"));
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeaders(RestApiServlet.X_GERRIT_TRACE))
-        .containsExactly("issue/123", "issue/456");
-    assertThat(projectCreationListener.traceIds).containsExactly("issue/123", "issue/456");
-    assertThat(projectCreationListener.isLoggingForced).isTrue();
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new9");
+      // different trace IDs specified by trace header and trace request parameter
+      response =
+          adminRestSession.putWithHeader(
+              "/projects/new9?trace=issue/123",
+              new BasicHeader(RestApiServlet.X_GERRIT_TRACE, "issue/456"));
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeaders(RestApiServlet.X_GERRIT_TRACE))
+          .containsExactly("issue/123", "issue/456");
+      assertThat(projectCreationListener.traceIds).containsExactly("issue/123", "issue/456");
+      assertThat(projectCreationListener.isLoggingForced).isTrue();
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new9");
+    }
   }
 
   @Test
   public void pushWithoutTrace() throws Exception {
-    PushOneCommit push = pushFactory.create(admin.newIdent(), testRepo);
-    PushOneCommit.Result r = push.to("refs/heads/master");
-    r.assertOkStatus();
-    assertThat(commitValidationListener.traceId).isNull();
-    assertThat(commitValidationListener.isLoggingForced).isFalse();
+    TraceValidatingCommitValidationListener commitValidationListener =
+        new TraceValidatingCommitValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(commitValidationListener)) {
+      PushOneCommit push = pushFactory.create(admin.newIdent(), testRepo);
+      PushOneCommit.Result r = push.to("refs/heads/master");
+      r.assertOkStatus();
+      assertThat(commitValidationListener.traceId).isNull();
+      assertThat(commitValidationListener.isLoggingForced).isFalse();
 
-    // The logging tag with the project name is also set if tracing is off.
-    assertThat(commitValidationListener.tags.get("project")).containsExactly(project.get());
+      // The logging tag with the project name is also set if tracing is off.
+      assertThat(commitValidationListener.tags.get("project")).containsExactly(project.get());
+    }
   }
 
   @Test
   public void pushWithTrace() throws Exception {
-    PushOneCommit push = pushFactory.create(admin.newIdent(), testRepo);
-    push.setPushOptions(ImmutableList.of("trace"));
-    PushOneCommit.Result r = push.to("refs/heads/master");
-    r.assertOkStatus();
-    assertThat(commitValidationListener.traceId).isNotNull();
-    assertThat(commitValidationListener.isLoggingForced).isTrue();
-    assertThat(commitValidationListener.tags.get("project")).containsExactly(project.get());
+    TraceValidatingCommitValidationListener commitValidationListener =
+        new TraceValidatingCommitValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(commitValidationListener)) {
+      PushOneCommit push = pushFactory.create(admin.newIdent(), testRepo);
+      push.setPushOptions(ImmutableList.of("trace"));
+      PushOneCommit.Result r = push.to("refs/heads/master");
+      r.assertOkStatus();
+      assertThat(commitValidationListener.traceId).isNotNull();
+      assertThat(commitValidationListener.isLoggingForced).isTrue();
+      assertThat(commitValidationListener.tags.get("project")).containsExactly(project.get());
+    }
   }
 
   @Test
   public void pushWithTraceAndProvidedTraceId() throws Exception {
-    PushOneCommit push = pushFactory.create(admin.newIdent(), testRepo);
-    push.setPushOptions(ImmutableList.of("trace=issue/123"));
-    PushOneCommit.Result r = push.to("refs/heads/master");
-    r.assertOkStatus();
-    assertThat(commitValidationListener.traceId).isEqualTo("issue/123");
-    assertThat(commitValidationListener.isLoggingForced).isTrue();
-    assertThat(commitValidationListener.tags.get("project")).containsExactly(project.get());
+    TraceValidatingCommitValidationListener commitValidationListener =
+        new TraceValidatingCommitValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(commitValidationListener)) {
+      PushOneCommit push = pushFactory.create(admin.newIdent(), testRepo);
+      push.setPushOptions(ImmutableList.of("trace=issue/123"));
+      PushOneCommit.Result r = push.to("refs/heads/master");
+      r.assertOkStatus();
+      assertThat(commitValidationListener.traceId).isEqualTo("issue/123");
+      assertThat(commitValidationListener.isLoggingForced).isTrue();
+      assertThat(commitValidationListener.tags.get("project")).containsExactly(project.get());
+    }
   }
 
   @Test
   public void pushForReviewWithoutTrace() throws Exception {
-    PushOneCommit push = pushFactory.create(admin.newIdent(), testRepo);
-    PushOneCommit.Result r = push.to("refs/for/master");
-    r.assertOkStatus();
-    assertThat(commitValidationListener.traceId).isNull();
-    assertThat(commitValidationListener.isLoggingForced).isFalse();
+    TraceValidatingCommitValidationListener commitValidationListener =
+        new TraceValidatingCommitValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(commitValidationListener)) {
+      PushOneCommit push = pushFactory.create(admin.newIdent(), testRepo);
+      PushOneCommit.Result r = push.to("refs/for/master");
+      r.assertOkStatus();
+      assertThat(commitValidationListener.traceId).isNull();
+      assertThat(commitValidationListener.isLoggingForced).isFalse();
 
-    // The logging tag with the project name is also set if tracing is off.
-    assertThat(commitValidationListener.tags.get("project")).containsExactly(project.get());
+      // The logging tag with the project name is also set if tracing is off.
+      assertThat(commitValidationListener.tags.get("project")).containsExactly(project.get());
+    }
   }
 
   @Test
   public void pushForReviewWithTrace() throws Exception {
-    PushOneCommit push = pushFactory.create(admin.newIdent(), testRepo);
-    push.setPushOptions(ImmutableList.of("trace"));
-    PushOneCommit.Result r = push.to("refs/for/master");
-    r.assertOkStatus();
-    assertThat(commitValidationListener.traceId).isNotNull();
-    assertThat(commitValidationListener.isLoggingForced).isTrue();
-    assertThat(commitValidationListener.tags.get("project")).containsExactly(project.get());
+    TraceValidatingCommitValidationListener commitValidationListener =
+        new TraceValidatingCommitValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(commitValidationListener)) {
+      PushOneCommit push = pushFactory.create(admin.newIdent(), testRepo);
+      push.setPushOptions(ImmutableList.of("trace"));
+      PushOneCommit.Result r = push.to("refs/for/master");
+      r.assertOkStatus();
+      assertThat(commitValidationListener.traceId).isNotNull();
+      assertThat(commitValidationListener.isLoggingForced).isTrue();
+      assertThat(commitValidationListener.tags.get("project")).containsExactly(project.get());
+    }
   }
 
   @Test
   public void pushForReviewWithTraceAndProvidedTraceId() throws Exception {
-    PushOneCommit push = pushFactory.create(admin.newIdent(), testRepo);
-    push.setPushOptions(ImmutableList.of("trace=issue/123"));
-    PushOneCommit.Result r = push.to("refs/for/master");
-    r.assertOkStatus();
-    assertThat(commitValidationListener.traceId).isEqualTo("issue/123");
-    assertThat(commitValidationListener.isLoggingForced).isTrue();
-    assertThat(commitValidationListener.tags.get("project")).containsExactly(project.get());
+    TraceValidatingCommitValidationListener commitValidationListener =
+        new TraceValidatingCommitValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(commitValidationListener)) {
+      PushOneCommit push = pushFactory.create(admin.newIdent(), testRepo);
+      push.setPushOptions(ImmutableList.of("trace=issue/123"));
+      PushOneCommit.Result r = push.to("refs/for/master");
+      r.assertOkStatus();
+      assertThat(commitValidationListener.traceId).isEqualTo("issue/123");
+      assertThat(commitValidationListener.isLoggingForced).isTrue();
+      assertThat(commitValidationListener.tags.get("project")).containsExactly(project.get());
+    }
   }
 
   @Test
@@ -345,246 +370,345 @@
 
   @Test
   public void performanceLoggingForRestCall() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new10");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+    TestPerformanceLogger testPerformanceLogger = new TestPerformanceLogger();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(testPerformanceLogger)) {
+      RestResponse response = adminRestSession.put("/projects/new10");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
 
-    // This assertion assumes that the server invokes the PerformanceLogger plugins before it sends
-    // the response to the client. If this assertion gets flaky it's likely that this got changed on
-    // server-side.
-    assertThat(testPerformanceLogger.logEntries()).isNotEmpty();
+      // This assertion assumes that the server invokes the PerformanceLogger plugins before it
+      // sends
+      // the response to the client. If this assertion gets flaky it's likely that this got changed
+      // on
+      // server-side.
+      assertThat(testPerformanceLogger.logEntries()).isNotEmpty();
+    }
   }
 
   @Test
   public void performanceLoggingForPush() throws Exception {
-    PushOneCommit push = pushFactory.create(admin.newIdent(), testRepo);
-    PushOneCommit.Result r = push.to("refs/heads/master");
-    r.assertOkStatus();
-    assertThat(testPerformanceLogger.logEntries()).isNotEmpty();
+    TestPerformanceLogger testPerformanceLogger = new TestPerformanceLogger();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(testPerformanceLogger)) {
+      PushOneCommit push = pushFactory.create(admin.newIdent(), testRepo);
+      PushOneCommit.Result r = push.to("refs/heads/master");
+      r.assertOkStatus();
+      assertThat(testPerformanceLogger.logEntries()).isNotEmpty();
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.performanceLogging", value = "false")
   public void noPerformanceLoggingIfDisabled() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new11");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+    TestPerformanceLogger testPerformanceLogger = new TestPerformanceLogger();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(testPerformanceLogger)) {
+      RestResponse response = adminRestSession.put("/projects/new11");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
 
-    PushOneCommit push = pushFactory.create(admin.newIdent(), testRepo);
-    PushOneCommit.Result r = push.to("refs/heads/master");
-    r.assertOkStatus();
+      PushOneCommit push = pushFactory.create(admin.newIdent(), testRepo);
+      PushOneCommit.Result r = push.to("refs/heads/master");
+      r.assertOkStatus();
 
-    assertThat(testPerformanceLogger.logEntries()).isEmpty();
+      assertThat(testPerformanceLogger.logEntries()).isEmpty();
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.issue123.projectPattern", value = "new12")
   public void traceProject() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new12");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isEqualTo("issue123");
-    assertThat(projectCreationListener.isLoggingForced).isTrue();
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new12");
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new12");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isEqualTo("issue123");
+      assertThat(projectCreationListener.isLoggingForced).isTrue();
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new12");
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.issue123.projectPattern", value = "new.*")
   public void traceProjectMatchRegEx() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new13");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isEqualTo("issue123");
-    assertThat(projectCreationListener.isLoggingForced).isTrue();
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new13");
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new13");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isEqualTo("issue123");
+      assertThat(projectCreationListener.isLoggingForced).isTrue();
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new13");
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.issue123.projectPattern", value = "foo.*")
   public void traceProjectNoMatch() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new13");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isNull();
-    assertThat(projectCreationListener.isLoggingForced).isFalse();
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new13");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isNull();
+      assertThat(projectCreationListener.isLoggingForced).isFalse();
 
-    // The logging tag with the project name is also set if tracing is off.
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new13");
+      // The logging tag with the project name is also set if tracing is off.
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new13");
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.issue123.projectPattern", value = "][")
   public void traceProjectInvalidRegEx() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new14");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isNull();
-    assertThat(projectCreationListener.isLoggingForced).isFalse();
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new14");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isNull();
+      assertThat(projectCreationListener.isLoggingForced).isFalse();
 
-    // The logging tag with the project name is also set if tracing is off.
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new14");
+      // The logging tag with the project name is also set if tracing is off.
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new14");
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.issue123.account", value = "1000000")
   public void traceAccount() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new15");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isEqualTo("issue123");
-    assertThat(projectCreationListener.isLoggingForced).isTrue();
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new15");
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new15");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isEqualTo("issue123");
+      assertThat(projectCreationListener.isLoggingForced).isTrue();
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new15");
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.issue123.account", value = "1000001")
   public void traceAccountNoMatch() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new16");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isNull();
-    assertThat(projectCreationListener.isLoggingForced).isFalse();
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new16");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isNull();
+      assertThat(projectCreationListener.isLoggingForced).isFalse();
 
-    // The logging tag with the project name is also set if tracing is off.
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new16");
+      // The logging tag with the project name is also set if tracing is off.
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new16");
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.issue123.account", value = "999")
   public void traceAccountNotFound() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new17");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isNull();
-    assertThat(projectCreationListener.isLoggingForced).isFalse();
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new17");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isNull();
+      assertThat(projectCreationListener.isLoggingForced).isFalse();
 
-    // The logging tag with the project name is also set if tracing is off.
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new17");
+      // The logging tag with the project name is also set if tracing is off.
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new17");
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.issue123.account", value = "invalid")
   public void traceAccountInvalidId() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new18");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isNull();
-    assertThat(projectCreationListener.isLoggingForced).isFalse();
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new18");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isNull();
+      assertThat(projectCreationListener.isLoggingForced).isFalse();
 
-    // The logging tag with the project name is also set if tracing is off.
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new18");
+      // The logging tag with the project name is also set if tracing is off.
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new18");
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.issue123.requestType", value = "REST")
   public void traceRequestType() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new19");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isEqualTo("issue123");
-    assertThat(projectCreationListener.isLoggingForced).isTrue();
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new19");
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new19");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isEqualTo("issue123");
+      assertThat(projectCreationListener.isLoggingForced).isTrue();
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new19");
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.issue123.requestType", value = "SSH")
   public void traceRequestTypeNoMatch() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new20");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isNull();
-    assertThat(projectCreationListener.isLoggingForced).isFalse();
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new20");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isNull();
+      assertThat(projectCreationListener.isLoggingForced).isFalse();
 
-    // The logging tag with the project name is also set if tracing is off.
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new20");
+      // The logging tag with the project name is also set if tracing is off.
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new20");
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.issue123.requestType", value = "FOO")
   public void traceProjectInvalidRequestType() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new21");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isNull();
-    assertThat(projectCreationListener.isLoggingForced).isFalse();
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new21");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isNull();
+      assertThat(projectCreationListener.isLoggingForced).isFalse();
 
-    // The logging tag with the project name is also set if tracing is off.
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new21");
+      // The logging tag with the project name is also set if tracing is off.
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new21");
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.issue123.account", value = "1000000")
   @GerritConfig(name = "tracing.issue123.projectPattern", value = "new.*")
   public void traceProjectForAccount() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new22");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isEqualTo("issue123");
-    assertThat(projectCreationListener.isLoggingForced).isTrue();
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new22");
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new22");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isEqualTo("issue123");
+      assertThat(projectCreationListener.isLoggingForced).isTrue();
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new22");
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.issue123.account", value = "1000000")
   @GerritConfig(name = "tracing.issue123.projectPattern", value = "foo.*")
   public void traceProjectForAccountNoProjectMatch() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new23");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isNull();
-    assertThat(projectCreationListener.isLoggingForced).isFalse();
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new23");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isNull();
+      assertThat(projectCreationListener.isLoggingForced).isFalse();
 
-    // The logging tag with the project name is also set if tracing is off.
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new23");
+      // The logging tag with the project name is also set if tracing is off.
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new23");
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.issue123.account", value = "1000001")
   @GerritConfig(name = "tracing.issue123.projectPattern", value = "new.*")
   public void traceProjectForAccountNoAccountMatch() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new24");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isNull();
-    assertThat(projectCreationListener.isLoggingForced).isFalse();
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new24");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isNull();
+      assertThat(projectCreationListener.isLoggingForced).isFalse();
 
-    // The logging tag with the project name is also set if tracing is off.
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new24");
+      // The logging tag with the project name is also set if tracing is off.
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new24");
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.issue123.requestUriPattern", value = "/projects/.*")
   public void traceRequestUri() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new23");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isEqualTo("issue123");
-    assertThat(projectCreationListener.isLoggingForced).isTrue();
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new23");
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new23");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isEqualTo("issue123");
+      assertThat(projectCreationListener.isLoggingForced).isTrue();
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new23");
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.issue123.requestUriPattern", value = "/projects/.*/foo")
   public void traceRequestUriNoMatch() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new23");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isNull();
-    assertThat(projectCreationListener.isLoggingForced).isFalse();
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new23");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isNull();
+      assertThat(projectCreationListener.isLoggingForced).isFalse();
 
-    // The logging tag with the project name is also set if tracing is off.
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new23");
+      // The logging tag with the project name is also set if tracing is off.
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new23");
+    }
   }
 
   @Test
   @GerritConfig(name = "tracing.issue123.requestUriPattern", value = "][")
   public void traceRequestUriInvalidRegEx() throws Exception {
-    RestResponse response = adminRestSession.put("/projects/new24");
-    assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
-    assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
-    assertThat(projectCreationListener.traceId).isNull();
-    assertThat(projectCreationListener.isLoggingForced).isFalse();
+    TraceValidatingProjectCreationValidationListener projectCreationListener =
+        new TraceValidatingProjectCreationValidationListener();
+    try (Registration registration =
+        extensionRegistry.newRegistration().add(projectCreationListener)) {
+      RestResponse response = adminRestSession.put("/projects/new24");
+      assertThat(response.getStatusCode()).isEqualTo(SC_CREATED);
+      assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
+      assertThat(projectCreationListener.traceId).isNull();
+      assertThat(projectCreationListener.isLoggingForced).isFalse();
 
-    // The logging tag with the project name is also set if tracing is off.
-    assertThat(projectCreationListener.tags.get("project")).containsExactly("new24");
+      // The logging tag with the project name is also set if tracing is off.
+      assertThat(projectCreationListener.tags.get("project")).containsExactly("new24");
+    }
   }
 
   @Test
@@ -595,15 +719,12 @@
 
     TraceSubmitRule traceSubmitRule = new TraceSubmitRule();
     traceSubmitRule.failAlways = true;
-    RegistrationHandle submitRuleRegistrationHandle = submitRules.add("gerrit", traceSubmitRule);
-    try {
+    try (Registration registration = extensionRegistry.newRegistration().add(traceSubmitRule)) {
       RestResponse response = adminRestSession.post("/changes/" + changeId + "/submit");
       assertThat(response.getStatusCode()).isEqualTo(SC_INTERNAL_SERVER_ERROR);
       assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).startsWith("retry-on-failure-");
       assertThat(traceSubmitRule.traceId).startsWith("retry-on-failure-");
       assertThat(traceSubmitRule.isLoggingForced).isTrue();
-    } finally {
-      submitRuleRegistrationHandle.remove();
     }
   }
 
@@ -615,25 +736,22 @@
 
     TraceSubmitRule traceSubmitRule = new TraceSubmitRule();
     traceSubmitRule.failAlways = true;
-    RegistrationHandle submitRuleRegistrationHandle = submitRules.add("gerrit", traceSubmitRule);
-    RegistrationHandle exceptionHookRegistrationHandle =
-        exceptionHooks.add(
-            "gerrit",
-            new ExceptionHook() {
-              @Override
-              public boolean shouldRetry(Throwable t) {
-                return true;
-              }
-            });
-    try {
+    try (Registration registration =
+        extensionRegistry
+            .newRegistration()
+            .add(traceSubmitRule)
+            .add(
+                new ExceptionHook() {
+                  @Override
+                  public boolean shouldRetry(Throwable t) {
+                    return true;
+                  }
+                })) {
       RestResponse response = adminRestSession.post("/changes/" + changeId + "/submit");
       assertThat(response.getStatusCode()).isEqualTo(SC_INTERNAL_SERVER_ERROR);
       assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
       assertThat(traceSubmitRule.traceId).isNull();
       assertThat(traceSubmitRule.isLoggingForced).isFalse();
-    } finally {
-      submitRuleRegistrationHandle.remove();
-      exceptionHookRegistrationHandle.remove();
     }
   }
 
@@ -644,15 +762,12 @@
 
     TraceSubmitRule traceSubmitRule = new TraceSubmitRule();
     traceSubmitRule.failOnce = true;
-    RegistrationHandle submitRuleRegistrationHandle = submitRules.add("gerrit", traceSubmitRule);
-    try {
+    try (Registration registration = extensionRegistry.newRegistration().add(traceSubmitRule)) {
       RestResponse response = adminRestSession.post("/changes/" + changeId + "/submit");
       assertThat(response.getStatusCode()).isEqualTo(SC_INTERNAL_SERVER_ERROR);
       assertThat(response.getHeader(RestApiServlet.X_GERRIT_TRACE)).isNull();
       assertThat(traceSubmitRule.traceId).isNull();
       assertThat(traceSubmitRule.isLoggingForced).isFalse();
-    } finally {
-      submitRuleRegistrationHandle.remove();
     }
   }
 
diff --git a/javatests/com/google/gerrit/acceptance/rest/change/ActionsIT.java b/javatests/com/google/gerrit/acceptance/rest/change/ActionsIT.java
index ae212b6..aeb5a4b 100644
--- a/javatests/com/google/gerrit/acceptance/rest/change/ActionsIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/change/ActionsIT.java
@@ -22,6 +22,8 @@
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Iterables;
 import com.google.gerrit.acceptance.AbstractDaemonTest;
+import com.google.gerrit.acceptance.ExtensionRegistry;
+import com.google.gerrit.acceptance.ExtensionRegistry.Registration;
 import com.google.gerrit.acceptance.PushOneCommit;
 import com.google.gerrit.acceptance.TestProjectInput;
 import com.google.gerrit.acceptance.testsuite.request.RequestScopeOperations;
@@ -33,11 +35,8 @@
 import com.google.gerrit.extensions.common.ActionInfo;
 import com.google.gerrit.extensions.common.ChangeInfo;
 import com.google.gerrit.extensions.common.RevisionInfo;
-import com.google.gerrit.extensions.registration.DynamicSet;
-import com.google.gerrit.extensions.registration.RegistrationHandle;
 import com.google.gerrit.reviewdb.client.Change;
 import com.google.gerrit.reviewdb.client.PatchSet;
-import com.google.gerrit.server.change.ChangeETagComputation;
 import com.google.gerrit.server.change.RevisionJson;
 import com.google.gerrit.server.query.change.ChangeData;
 import com.google.gerrit.testing.ConfigSuite;
@@ -47,8 +46,6 @@
 import java.util.Set;
 import java.util.TreeSet;
 import org.eclipse.jgit.lib.Config;
-import org.junit.After;
-import org.junit.Before;
 import org.junit.Test;
 
 public class ActionsIT extends AbstractDaemonTest {
@@ -57,24 +54,9 @@
     return submitWholeTopicEnabledConfig();
   }
 
-  @Inject private DynamicSet<ActionVisitor> actionVisitors;
   @Inject private RequestScopeOperations requestScopeOperations;
   @Inject private RevisionJson.Factory revisionJsonFactory;
-  @Inject private DynamicSet<ChangeETagComputation> changeETagComputations;
-
-  private RegistrationHandle visitorHandle;
-
-  @Before
-  public void setUp() {
-    visitorHandle = null;
-  }
-
-  @After
-  public void tearDown() {
-    if (visitorHandle != null) {
-      visitorHandle.remove();
-    }
-  }
+  @Inject private ExtensionRegistry extensionRegistry;
 
   protected Map<String, ActionInfo> getActions(String id) throws Exception {
     return gApi.changes().id(id).revision(1).actions();
@@ -213,11 +195,8 @@
     String change = createChange().getChangeId();
     String oldETag = getETag(change);
 
-    RegistrationHandle registrationHandle = changeETagComputations.add("gerrit", (p, id) -> "foo");
-    try {
+    try (Registration registration = extensionRegistry.newRegistration().add((p, id) -> "foo")) {
       assertThat(getETag(change)).isNotEqualTo(oldETag);
-    } finally {
-      registrationHandle.remove();
     }
 
     assertThat(getETag(change)).isEqualTo(oldETag);
@@ -228,11 +207,8 @@
     String change = createChange().getChangeId();
     String oldETag = getETag(change);
 
-    RegistrationHandle registrationHandle = changeETagComputations.add("gerrit", (p, id) -> null);
-    try {
+    try (Registration registration = extensionRegistry.newRegistration().add((p, id) -> null)) {
       assertThat(getETag(change)).isEqualTo(oldETag);
-    } finally {
-      registrationHandle.remove();
     }
   }
 
@@ -241,16 +217,14 @@
     String change = createChange().getChangeId();
     String oldETag = getETag(change);
 
-    RegistrationHandle registrationHandle =
-        changeETagComputations.add(
-            "gerrit",
-            (p, id) -> {
-              throw new StorageException("exception during test");
-            });
-    try {
+    try (Registration registration =
+        extensionRegistry
+            .newRegistration()
+            .add(
+                (p, id) -> {
+                  throw new StorageException("exception during test");
+                })) {
       assertThat(getETag(change)).isEqualTo(oldETag);
-    } finally {
-      registrationHandle.remove();
     }
   }
 
@@ -380,19 +354,18 @@
     assertThat(origActions.keySet()).containsAtLeast("followup", "abandon");
     assertThat(origActions.get("abandon").label).isEqualTo("Abandon");
 
-    Visitor v = new Visitor();
-    visitorHandle = actionVisitors.add("gerrit", v);
+    try (Registration registration = extensionRegistry.newRegistration().add(new Visitor())) {
+      Map<String, ActionInfo> newActions =
+          gApi.changes().id(id).get(EnumSet.of(ListChangesOption.CHANGE_ACTIONS)).actions;
 
-    Map<String, ActionInfo> newActions =
-        gApi.changes().id(id).get(EnumSet.of(ListChangesOption.CHANGE_ACTIONS)).actions;
+      Set<String> expectedNames = new TreeSet<>(origActions.keySet());
+      expectedNames.remove("followup");
+      assertThat(newActions.keySet()).isEqualTo(expectedNames);
 
-    Set<String> expectedNames = new TreeSet<>(origActions.keySet());
-    expectedNames.remove("followup");
-    assertThat(newActions.keySet()).isEqualTo(expectedNames);
-
-    ActionInfo abandon = newActions.get("abandon");
-    assertThat(abandon).isNotNull();
-    assertThat(abandon.label).isEqualTo("Abandon All Hope");
+      ActionInfo abandon = newActions.get("abandon");
+      assertThat(abandon).isNotNull();
+      assertThat(abandon.label).isEqualTo("Abandon All Hope");
+    }
   }
 
   @Test
@@ -429,22 +402,22 @@
     assertThat(origActions.keySet()).containsAtLeast("cherrypick", "rebase");
     assertThat(origActions.get("rebase").label).isEqualTo("Rebase");
 
-    Visitor v = new Visitor();
-    visitorHandle = actionVisitors.add("gerrit", v);
+    try (Registration registration = extensionRegistry.newRegistration().add(new Visitor())) {
+      // Test different codepaths within ActionJson...
+      // ...via revision API.
+      visitedCurrentRevisionActionsAssertions(
+          origActions, gApi.changes().id(id).current().actions());
 
-    // Test different codepaths within ActionJson...
-    // ...via revision API.
-    visitedCurrentRevisionActionsAssertions(origActions, gApi.changes().id(id).current().actions());
+      // ...via change API with option.
+      EnumSet<ListChangesOption> opts = EnumSet.of(CURRENT_ACTIONS, CURRENT_REVISION);
+      ChangeInfo changeInfo = gApi.changes().id(id).get(opts);
+      RevisionInfo revisionInfo = Iterables.getOnlyElement(changeInfo.revisions.values());
+      visitedCurrentRevisionActionsAssertions(origActions, revisionInfo.actions);
 
-    // ...via change API with option.
-    EnumSet<ListChangesOption> opts = EnumSet.of(CURRENT_ACTIONS, CURRENT_REVISION);
-    ChangeInfo changeInfo = gApi.changes().id(id).get(opts);
-    RevisionInfo revisionInfo = Iterables.getOnlyElement(changeInfo.revisions.values());
-    visitedCurrentRevisionActionsAssertions(origActions, revisionInfo.actions);
-
-    // ...via ChangeJson directly.
-    ChangeData cd = changeDataFactory.create(project, changeId);
-    revisionJsonFactory.create(opts).getRevisionInfo(cd, cd.patchSet(PatchSet.id(changeId, 1)));
+      // ...via ChangeJson directly.
+      ChangeData cd = changeDataFactory.create(project, changeId);
+      revisionJsonFactory.create(opts).getRevisionInfo(cd, cd.patchSet(PatchSet.id(changeId, 1)));
+    }
   }
 
   private void visitedCurrentRevisionActionsAssertions(
@@ -489,18 +462,17 @@
     assertThat(origActions.keySet()).containsExactly("description");
     assertThat(origActions.get("description").label).isEqualTo("Edit Description");
 
-    Visitor v = new Visitor();
-    visitorHandle = actionVisitors.add("gerrit", v);
+    try (Registration registration = extensionRegistry.newRegistration().add(new Visitor())) {
+      // Unlike for the current revision, actions for old revisions are only available via the
+      // revision API.
+      Map<String, ActionInfo> newActions = gApi.changes().id(id).revision(1).actions();
+      assertThat(newActions).isNotNull();
+      assertThat(newActions.keySet()).isEqualTo(origActions.keySet());
 
-    // Unlike for the current revision, actions for old revisions are only available via the
-    // revision API.
-    Map<String, ActionInfo> newActions = gApi.changes().id(id).revision(1).actions();
-    assertThat(newActions).isNotNull();
-    assertThat(newActions.keySet()).isEqualTo(origActions.keySet());
-
-    ActionInfo description = newActions.get("description");
-    assertThat(description).isNotNull();
-    assertThat(description.label).isEqualTo("Describify");
+      ActionInfo description = newActions.get("description");
+      assertThat(description).isNotNull();
+      assertThat(description.label).isEqualTo("Describify");
+    }
   }
 
   private void commonActionsAssertions(Map<String, ActionInfo> actions) {
diff --git a/javatests/com/google/gerrit/acceptance/rest/change/PrivateByDefaultIT.java b/javatests/com/google/gerrit/acceptance/rest/change/PrivateByDefaultIT.java
index a6fa9fc5..92e00aa 100644
--- a/javatests/com/google/gerrit/acceptance/rest/change/PrivateByDefaultIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/change/PrivateByDefaultIT.java
@@ -30,7 +30,6 @@
 import com.google.inject.Inject;
 import org.eclipse.jgit.internal.storage.dfs.InMemoryRepository;
 import org.eclipse.jgit.junit.TestRepository;
-import org.eclipse.jgit.revwalk.RevCommit;
 import org.junit.Before;
 import org.junit.Test;
 
@@ -126,22 +125,6 @@
     result.assertErrorStatus();
   }
 
-  @Test
-  @GerritConfig(name = "change.disablePrivateChanges", value = "true")
-  public void pushDraftsWithPrivateByDefaultAndDisablePrivateChangesTrue() throws Exception {
-    setPrivateByDefault(project2, InheritableBoolean.TRUE);
-
-    RevCommit initialHead = projectOperations.project(project2).getHead("master");
-    TestRepository<InMemoryRepository> testRepo = cloneProject(project2);
-    PushOneCommit.Result result =
-        pushFactory.create(admin.newIdent(), testRepo).to("refs/for/master%draft");
-    result.assertErrorStatus();
-
-    testRepo.reset(initialHead);
-    result = pushFactory.create(admin.newIdent(), testRepo).to("refs/drafts/master");
-    result.assertErrorStatus();
-  }
-
   private void setPrivateByDefault(Project.NameKey proj, InheritableBoolean value)
       throws Exception {
     ConfigInput input = new ConfigInput();
diff --git a/javatests/com/google/gerrit/acceptance/server/event/EventPayloadIT.java b/javatests/com/google/gerrit/acceptance/server/event/EventPayloadIT.java
new file mode 100644
index 0000000..5ff1c32
--- /dev/null
+++ b/javatests/com/google/gerrit/acceptance/server/event/EventPayloadIT.java
@@ -0,0 +1,65 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.gerrit.acceptance.server.event;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import com.google.gerrit.acceptance.AbstractDaemonTest;
+import com.google.gerrit.acceptance.GerritConfig;
+import com.google.gerrit.acceptance.NoHttpd;
+import com.google.gerrit.extensions.events.RevisionCreatedListener;
+import com.google.gerrit.extensions.registration.DynamicSet;
+import com.google.gerrit.extensions.registration.RegistrationHandle;
+import com.google.inject.Inject;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+@NoHttpd
+public class EventPayloadIT extends AbstractDaemonTest {
+  @Inject private DynamicSet<RevisionCreatedListener> revisionCreatedListeners;
+
+  private RegistrationHandle eventListenerRegistration;
+  private RevisionCreatedListener.Event lastEvent;
+
+  @Before
+  public void setUp() throws Exception {
+    eventListenerRegistration = revisionCreatedListeners.add("gerrit", event -> lastEvent = event);
+  }
+
+  @After
+  public void cleanup() {
+    eventListenerRegistration.remove();
+  }
+
+  @Test
+  public void defaultOptions() throws Exception {
+    createChange();
+
+    assertThat(lastEvent.getChange().submittable).isNotNull();
+    assertThat(lastEvent.getRevision().files).isNotEmpty();
+  }
+
+  @Test
+  @GerritConfig(name = "event.payload.listChangeOptions", value = "SKIP_MERGEABLE")
+  public void configuredOptions() throws Exception {
+    createChange();
+
+    assertThat(lastEvent.getChange().submittable).isNull();
+    assertThat(lastEvent.getChange().mergeable).isNull();
+    assertThat(lastEvent.getRevision().files).isNull();
+    assertThat(lastEvent.getChange().subject).isNotEmpty();
+  }
+}
diff --git a/javatests/com/google/gerrit/acceptance/server/project/CustomLabelIT.java b/javatests/com/google/gerrit/acceptance/server/project/CustomLabelIT.java
index c91bfcb..3b7d826 100644
--- a/javatests/com/google/gerrit/acceptance/server/project/CustomLabelIT.java
+++ b/javatests/com/google/gerrit/acceptance/server/project/CustomLabelIT.java
@@ -32,6 +32,8 @@
 import static com.google.gerrit.testing.GerritJUnit.assertThrows;
 
 import com.google.gerrit.acceptance.AbstractDaemonTest;
+import com.google.gerrit.acceptance.ExtensionRegistry;
+import com.google.gerrit.acceptance.ExtensionRegistry.Registration;
 import com.google.gerrit.acceptance.NoHttpd;
 import com.google.gerrit.acceptance.PushOneCommit;
 import com.google.gerrit.acceptance.testsuite.project.ProjectOperations;
@@ -42,30 +44,24 @@
 import com.google.gerrit.extensions.common.ChangeInfo;
 import com.google.gerrit.extensions.common.LabelInfo;
 import com.google.gerrit.extensions.events.CommentAddedListener;
-import com.google.gerrit.extensions.registration.DynamicSet;
-import com.google.gerrit.extensions.registration.RegistrationHandle;
 import com.google.gerrit.extensions.restapi.ResourceConflictException;
 import com.google.gerrit.server.project.ProjectConfig;
 import com.google.inject.Inject;
 import java.util.Arrays;
-import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
 
 @NoHttpd
 public class CustomLabelIT extends AbstractDaemonTest {
 
-  @Inject private DynamicSet<CommentAddedListener> source;
   @Inject private ProjectOperations projectOperations;
+  @Inject private ExtensionRegistry extensionRegistry;
 
   private final LabelType label =
       label("CustomLabel", value(1, "Positive"), value(0, "No score"), value(-1, "Negative"));
 
   private final LabelType P = label("CustomLabel2", value(1, "Positive"), value(0, "No score"));
 
-  private RegistrationHandle eventListenerRegistration;
-  private CommentAddedListener.Event lastCommentAddedEvent;
-
   @Before
   public void setUp() throws Exception {
     projectOperations
@@ -74,12 +70,6 @@
         .add(allowLabel(label.getName()).ref("refs/heads/*").group(ANONYMOUS_USERS).range(-1, 1))
         .add(allowLabel(P.getName()).ref("refs/heads/*").group(ANONYMOUS_USERS).range(0, 1))
         .update();
-    eventListenerRegistration = source.add("gerrit", event -> lastCommentAddedEvent = event);
-  }
-
-  @After
-  public void cleanup() {
-    eventListenerRegistration.remove();
   }
 
   @Test
@@ -166,28 +156,41 @@
     assertThat(q.blocking).isTrue();
   }
 
+  private static class TestListener implements CommentAddedListener {
+    public CommentAddedListener.Event lastCommentAddedEvent;
+
+    @Override
+    public void onCommentAdded(Event event) {
+      lastCommentAddedEvent = event;
+    }
+  }
+
   @Test
   public void customLabelAnyWithBlock_Addreviewer_ZeroVote() throws Exception {
-    P.setFunction(ANY_WITH_BLOCK);
-    saveLabelConfig();
-    PushOneCommit.Result r = createChange();
-    AddReviewerInput in = new AddReviewerInput();
-    in.reviewer = user.email();
-    gApi.changes().id(r.getChangeId()).addReviewer(in);
+    TestListener testListener = new TestListener();
+    try (Registration registration = extensionRegistry.newRegistration().add(testListener)) {
+      P.setFunction(ANY_WITH_BLOCK);
+      saveLabelConfig();
+      PushOneCommit.Result r = createChange();
+      AddReviewerInput in = new AddReviewerInput();
+      in.reviewer = user.email();
+      gApi.changes().id(r.getChangeId()).addReviewer(in);
 
-    ReviewInput input = new ReviewInput().label(P.getName(), 0);
-    input.message = "foo";
+      ReviewInput input = new ReviewInput().label(P.getName(), 0);
+      input.message = "foo";
 
-    revision(r).review(input);
-    ChangeInfo c = getWithLabels(r);
-    LabelInfo q = c.labels.get(P.getName());
-    assertThat(q.all).hasSize(1);
-    assertThat(q.approved).isNull();
-    assertThat(q.recommended).isNull();
-    assertThat(q.disliked).isNull();
-    assertThat(q.rejected).isNull();
-    assertThat(q.blocking).isNull();
-    assertThat(lastCommentAddedEvent.getComment()).isEqualTo("Patch Set 1:\n\n" + input.message);
+      revision(r).review(input);
+      ChangeInfo c = getWithLabels(r);
+      LabelInfo q = c.labels.get(P.getName());
+      assertThat(q.all).hasSize(1);
+      assertThat(q.approved).isNull();
+      assertThat(q.recommended).isNull();
+      assertThat(q.disliked).isNull();
+      assertThat(q.rejected).isNull();
+      assertThat(q.blocking).isNull();
+      assertThat(testListener.lastCommentAddedEvent.getComment())
+          .isEqualTo("Patch Set 1:\n\n" + input.message);
+    }
   }
 
   @Test
diff --git a/javatests/com/google/gerrit/acceptance/ssh/AbstractIndexTests.java b/javatests/com/google/gerrit/acceptance/ssh/AbstractIndexTests.java
index ed3cdbc..a03d7f3 100644
--- a/javatests/com/google/gerrit/acceptance/ssh/AbstractIndexTests.java
+++ b/javatests/com/google/gerrit/acceptance/ssh/AbstractIndexTests.java
@@ -45,7 +45,7 @@
   private RegistrationHandle changeIndexedCounterHandle;
 
   /** @param injector injector */
-  public abstract void configureIndex(Injector injector) throws Exception;
+  public void configureIndex(Injector injector) {}
 
   @Before
   public void addChangeIndexedCounter() {
diff --git a/javatests/com/google/gerrit/acceptance/ssh/CustomIndexIT.java b/javatests/com/google/gerrit/acceptance/ssh/CustomIndexIT.java
new file mode 100644
index 0000000..434071f
--- /dev/null
+++ b/javatests/com/google/gerrit/acceptance/ssh/CustomIndexIT.java
@@ -0,0 +1,33 @@
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.gerrit.acceptance.ssh;
+
+import com.google.gerrit.index.IndexType;
+import com.google.gerrit.testing.ConfigSuite;
+import org.eclipse.jgit.lib.Config;
+
+/**
+ * Tests for a defaulted custom index configuration. This unknown type is the opposite of {@link
+ * IndexType#getKnownTypes()}.
+ */
+public class CustomIndexIT extends AbstractIndexTests {
+
+  @ConfigSuite.Default
+  public static Config customIndexType() {
+    Config config = new Config();
+    config.setString("index", null, "type", "custom");
+    return config;
+  }
+}
diff --git a/javatests/com/google/gerrit/acceptance/ssh/ElasticIndexIT.java b/javatests/com/google/gerrit/acceptance/ssh/ElasticIndexIT.java
index 61a490b..1c41b55 100644
--- a/javatests/com/google/gerrit/acceptance/ssh/ElasticIndexIT.java
+++ b/javatests/com/google/gerrit/acceptance/ssh/ElasticIndexIT.java
@@ -18,10 +18,12 @@
 import static com.google.gerrit.elasticsearch.ElasticTestUtils.getConfig;
 
 import com.google.gerrit.elasticsearch.ElasticVersion;
+import com.google.gerrit.index.IndexType;
 import com.google.gerrit.testing.ConfigSuite;
 import com.google.inject.Injector;
 import org.eclipse.jgit.lib.Config;
 
+/** Tests for every supported {@link IndexType#isElasticsearch()} most recent index version. */
 public class ElasticIndexIT extends AbstractIndexTests {
 
   @ConfigSuite.Default
@@ -40,7 +42,7 @@
   }
 
   @Override
-  public void configureIndex(Injector injector) throws Exception {
+  public void configureIndex(Injector injector) {
     createAllIndexes(injector);
   }
 }
diff --git a/javatests/com/google/gerrit/acceptance/ssh/IndexIT.java b/javatests/com/google/gerrit/acceptance/ssh/IndexIT.java
index 196a1e5..7062b00 100644
--- a/javatests/com/google/gerrit/acceptance/ssh/IndexIT.java
+++ b/javatests/com/google/gerrit/acceptance/ssh/IndexIT.java
@@ -14,10 +14,7 @@
 
 package com.google.gerrit.acceptance.ssh;
 
-import com.google.inject.Injector;
+import com.google.gerrit.index.IndexType;
 
-public class IndexIT extends AbstractIndexTests {
-
-  @Override
-  public void configureIndex(Injector injector) throws Exception {}
-}
+/** Tests for the default {@link IndexType#isLucene()} index configuration. */
+public class IndexIT extends AbstractIndexTests {}
diff --git a/javatests/com/google/gerrit/server/permissions/RefControlTest.java b/javatests/com/google/gerrit/server/permissions/RefControlTest.java
index 2869743..68d3821 100644
--- a/javatests/com/google/gerrit/server/permissions/RefControlTest.java
+++ b/javatests/com/google/gerrit/server/permissions/RefControlTest.java
@@ -334,50 +334,6 @@
   }
 
   @Test
-  public void blockPushDrafts() throws Exception {
-    projectOperations
-        .project(parentKey)
-        .forUpdate()
-        .add(allow(PUSH).ref("refs/for/refs/*").group(REGISTERED_USERS))
-        .add(block(PUSH).ref("refs/drafts/*").group(ANONYMOUS_USERS))
-        .update();
-    projectOperations
-        .project(localKey)
-        .forUpdate()
-        .add(allow(PUSH).ref("refs/drafts/*").group(REGISTERED_USERS))
-        .update();
-
-    ProjectControl u = user(localKey);
-    assertCreateChange("refs/heads/master", u);
-    assertThat(u.controlForRef("refs/drafts/master").canPerform(PUSH)).isFalse();
-  }
-
-  @Test
-  public void blockPushDraftsUnblockAdmin() throws Exception {
-    projectOperations
-        .project(parentKey)
-        .forUpdate()
-        .add(block(PUSH).ref("refs/drafts/*").group(ANONYMOUS_USERS))
-        .add(allow(PUSH).ref("refs/drafts/*").group(ADMIN))
-        .update();
-    projectOperations
-        .project(localKey)
-        .forUpdate()
-        .add(allow(PUSH).ref("refs/drafts/*").group(REGISTERED_USERS))
-        .update();
-
-    ProjectControl u = user(localKey);
-    ProjectControl a = user(localKey, "a", ADMIN);
-
-    assertWithMessage("push is allowed")
-        .that(a.controlForRef("refs/drafts/master").canPerform(PUSH))
-        .isTrue();
-    assertWithMessage("push is not allowed")
-        .that(u.controlForRef("refs/drafts/master").canPerform(PUSH))
-        .isFalse();
-  }
-
-  @Test
   public void inheritRead_SingleBranchDoesNotOverrideInherited() throws Exception {
     projectOperations
         .project(parentKey)
diff --git a/javatests/com/google/gerrit/server/project/ProjectConfigTest.java b/javatests/com/google/gerrit/server/project/ProjectConfigTest.java
index 0b401df..b53f355 100644
--- a/javatests/com/google/gerrit/server/project/ProjectConfigTest.java
+++ b/javatests/com/google/gerrit/server/project/ProjectConfigTest.java
@@ -63,7 +63,10 @@
 
 public class ProjectConfigTest {
   private static final String LABEL_SCORES_CONFIG =
-      "  copyMinScore = "
+      "  copyAnyScore = "
+          + !LabelType.DEF_COPY_ANY_SCORE
+          + "\n"
+          + "  copyMinScore = "
           + !LabelType.DEF_COPY_MIN_SCORE
           + "\n"
           + "  copyMaxScore = "
@@ -259,6 +262,7 @@
     ProjectConfig cfg = read(rev);
     Map<String, LabelType> labels = cfg.getLabelSections();
     LabelType type = labels.entrySet().iterator().next().getValue();
+    assertThat(type.isCopyAnyScore()).isNotEqualTo(LabelType.DEF_COPY_ANY_SCORE);
     assertThat(type.isCopyMinScore()).isNotEqualTo(LabelType.DEF_COPY_MIN_SCORE);
     assertThat(type.isCopyMaxScore()).isNotEqualTo(LabelType.DEF_COPY_MAX_SCORE);
     assertThat(type.isCopyAllScoresOnMergeFirstParentUpdate())
diff --git a/javatests/com/google/gerrit/server/query/change/AbstractQueryChangesTest.java b/javatests/com/google/gerrit/server/query/change/AbstractQueryChangesTest.java
index 195c6d5..350c6d2 100644
--- a/javatests/com/google/gerrit/server/query/change/AbstractQueryChangesTest.java
+++ b/javatests/com/google/gerrit/server/query/change/AbstractQueryChangesTest.java
@@ -412,13 +412,6 @@
 
   @Test
   public void byPrivate() throws Exception {
-    if (getSchemaVersion() < 40) {
-      assertMissingField(ChangeField.PRIVATE);
-      assertFailingQuery(
-          "is:private", "'is:private' operator is not supported by change index version");
-      return;
-    }
-
     TestRepository<Repo> repo = createProject("repo");
     Change change1 = insert(repo, newChange(repo), userId);
     Account.Id user2 =
@@ -443,12 +436,6 @@
 
   @Test
   public void byWip() throws Exception {
-    if (getSchemaVersion() < 42) {
-      assertMissingField(ChangeField.WIP);
-      assertFailingQuery("is:wip", "'is:wip' operator is not supported by change index version");
-      return;
-    }
-
     TestRepository<Repo> repo = createProject("repo");
     Change change1 = insert(repo, newChange(repo), userId);
 
@@ -465,24 +452,7 @@
   }
 
   @Test
-  public void excludeWipChangeFromReviewersDashboardsBeforeSchema42() throws Exception {
-    assume().that(getSchemaVersion()).isLessThan(42);
-
-    assertMissingField(ChangeField.WIP);
-    assertFailingQuery("is:wip", "'is:wip' operator is not supported by change index version");
-
-    Account.Id user1 = createAccount("user1");
-    TestRepository<Repo> repo = createProject("repo");
-    Change change1 = insert(repo, newChangeWorkInProgress(repo), userId);
-    assertQuery("reviewer:" + user1, change1);
-    gApi.changes().id(change1.getChangeId()).setWorkInProgress();
-    assertQuery("reviewer:" + user1, change1);
-  }
-
-  @Test
   public void excludeWipChangeFromReviewersDashboards() throws Exception {
-    assume().that(getSchemaVersion()).isAtLeast(42);
-
     Account.Id user1 = createAccount("user1");
     TestRepository<Repo> repo = createProject("repo");
     Change change1 = insert(repo, newChangeWorkInProgress(repo), userId);
@@ -500,17 +470,7 @@
   }
 
   @Test
-  public void byStartedBeforeSchema44() throws Exception {
-    assume().that(getSchemaVersion()).isLessThan(44);
-    assertMissingField(ChangeField.STARTED);
-    assertFailingQuery(
-        "is:started", "'is:started' operator is not supported by change index version");
-  }
-
-  @Test
   public void byStarted() throws Exception {
-    assume().that(getSchemaVersion()).isAtLeast(44);
-
     TestRepository<Repo> repo = createProject("repo");
     Change change1 = insert(repo, newChangeWorkInProgress(repo));
 
@@ -546,8 +506,6 @@
 
   @Test
   public void restorePendingReviewers() throws Exception {
-    assume().that(getSchemaVersion()).isAtLeast(44);
-
     Project.NameKey project = Project.nameKey("repo");
     TestRepository<Repo> repo = createProject(project.get());
     ConfigInput conf = new ConfigInput();
@@ -1377,15 +1335,6 @@
 
   @Test
   public void byExtension() throws Exception {
-    if (getSchemaVersion() < 52) {
-      assertMissingField(ChangeField.EXTENSION);
-      String unsupportedOperatorMsg =
-          "'extension' operator is not supported by change index version";
-      assertFailingQuery("extension:txt", unsupportedOperatorMsg);
-      assertFailingQuery("ext:txt", unsupportedOperatorMsg);
-      return;
-    }
-
     TestRepository<Repo> repo = createProject("repo");
     Change change1 = insert(repo, newChangeWithFiles(repo, "foo.h", "foo.cc"));
     Change change2 = insert(repo, newChangeWithFiles(repo, "bar.H", "bar.CC"));
@@ -1409,15 +1358,6 @@
 
   @Test
   public void byOnlyExtensions() throws Exception {
-    if (getSchemaVersion() < 53) {
-      assertMissingField(ChangeField.ONLY_EXTENSIONS);
-      String unsupportedOperatorMessage =
-          "'onlyextensions' operator is not supported by change index version";
-      assertFailingQuery("onlyextensions:txt,jpg", unsupportedOperatorMessage);
-      assertFailingQuery("onlyexts:txt,jpg", unsupportedOperatorMessage);
-      return;
-    }
-
     TestRepository<Repo> repo = createProject("repo");
     Change change1 = insert(repo, newChangeWithFiles(repo, "foo.h", "foo.cc", "bar.cc"));
     Change change2 = insert(repo, newChangeWithFiles(repo, "bar.H", "bar.CC", "foo.H"));
@@ -1465,14 +1405,6 @@
 
   @Test
   public void byFooter() throws Exception {
-    if (getSchemaVersion() < 54) {
-      assertMissingField(ChangeField.FOOTER);
-      assertFailingQuery(
-          "footer:Change-Id=I3d2b978ed455f835d1dad2daa920be0b0ec2ae36",
-          "'footer' operator is not supported by change index version");
-      return;
-    }
-
     TestRepository<Repo> repo = createProject("repo");
     RevCommit commit1 = repo.parseBody(repo.commit().message("Test\n\nfoo: bar").create());
     Change change1 = insert(repo, newChangeForCommit(repo, commit1));
@@ -1522,15 +1454,6 @@
 
   @Test
   public void byDirectory() throws Exception {
-    if (getSchemaVersion() < 55) {
-      assertMissingField(ChangeField.DIRECTORY);
-      String unsupportedOperatorMessage =
-          "'directory' operator is not supported by change index version";
-      assertFailingQuery("directory:src/java", unsupportedOperatorMessage);
-      assertFailingQuery("dir:src/java", unsupportedOperatorMessage);
-      return;
-    }
-
     TestRepository<Repo> repo = createProject("repo");
     Change change1 = insert(repo, newChangeWithFiles(repo, "src/foo.h", "src/foo.cc"));
     Change change2 = insert(repo, newChangeWithFiles(repo, "src/java/foo.java", "src/js/bar.js"));
@@ -1597,8 +1520,6 @@
 
   @Test
   public void byDirectoryRegex() throws Exception {
-    assume().that(getSchemaVersion()).isAtLeast(55);
-
     TestRepository<Repo> repo = createProject("repo");
     Change change1 = insert(repo, newChangeWithFiles(repo, "src/java/foo.java", "src/js/bar.js"));
     Change change2 =
@@ -2293,25 +2214,12 @@
     rin.state = ReviewerState.CC;
     gApi.changes().id(change2.getId().get()).addReviewer(rin);
 
-    if (getSchemaVersion() >= 41) {
-      assertQuery("reviewer:\"" + userByEmailWithName + "\"", change1);
-      assertQuery("cc:\"" + userByEmailWithName + "\"", change2);
+    assertQuery("reviewer:\"" + userByEmailWithName + "\"", change1);
+    assertQuery("cc:\"" + userByEmailWithName + "\"", change2);
 
-      // Omitting the name:
-      assertQuery("reviewer:\"" + userByEmail + "\"", change1);
-      assertQuery("cc:\"" + userByEmail + "\"", change2);
-    } else {
-      assertMissingField(ChangeField.REVIEWER_BY_EMAIL);
-
-      assertFailingQuery(
-          "reviewer:\"" + userByEmailWithName + "\"", "User " + userByEmailWithName + " not found");
-      assertFailingQuery(
-          "cc:\"" + userByEmailWithName + "\"", "User " + userByEmailWithName + " not found");
-
-      // Omitting the name:
-      assertFailingQuery("reviewer:\"" + userByEmail + "\"", "User " + userByEmail + " not found");
-      assertFailingQuery("cc:\"" + userByEmail + "\"", "User " + userByEmail + " not found");
-    }
+    // Omitting the name:
+    assertQuery("reviewer:\"" + userByEmail + "\"", change1);
+    assertQuery("cc:\"" + userByEmail + "\"", change2);
   }
 
   @Test
@@ -2338,17 +2246,8 @@
     rin.state = ReviewerState.CC;
     gApi.changes().id(change2.getId().get()).addReviewer(rin);
 
-    if (getSchemaVersion() >= 41) {
-      assertQuery("reviewer:\"someone@example.com\"");
-      assertQuery("cc:\"someone@example.com\"");
-    } else {
-      assertMissingField(ChangeField.REVIEWER_BY_EMAIL);
-
-      String someoneEmail = "someone@example.com";
-      assertFailingQuery(
-          "reviewer:\"" + someoneEmail + "\"", "User " + someoneEmail + " not found");
-      assertFailingQuery("cc:\"" + someoneEmail + "\"", "User " + someoneEmail + " not found");
-    }
+    assertQuery("reviewer:\"someone@example.com\"");
+    assertQuery("cc:\"someone@example.com\"");
   }
 
   @Test
@@ -2587,13 +2486,6 @@
 
   @Test
   public void revertOf() throws Exception {
-    if (getSchemaVersion() < 45) {
-      assertMissingField(ChangeField.REVERT_OF);
-      assertFailingQuery(
-          "revertof:1", "'revertof' operator is not supported by change index version");
-      return;
-    }
-
     TestRepository<Repo> repo = createProject("repo");
     // Create two commits and revert second commit (initial commit can't be reverted)
     Change initial = insert(repo, newChange(repo));
diff --git a/lib/highlightjs/highlight.min.js b/lib/highlightjs/highlight.min.js
index 6bc9671..d59d1ca 100644
--- a/lib/highlightjs/highlight.min.js
+++ b/lib/highlightjs/highlight.min.js
@@ -42,7 +42,7 @@
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 illegal:"[]{}%#'\""},{begin:"(\\b(with|overriding)\\s+)?\\b(function|procedure)\\s+",end:"(\\bis|\\bwith|\\brenames|\\)\\s*;)",keywords:"overriding function procedure with is renames return",returnBegin:!0,contains:[a,{className:"title",begin:"(\\bwith\\s+)?\\b(function|procedure)\\s+",end:"(\\(|\\s+|$)",excludeBegin:!0,excludeEnd:!0,illegal:"[]{}%#'\""},c,{className:"type",begin:"\\breturn\\s+",end:"(\\s+|;|$)",keywords:"return",excludeBegin:!0,excludeEnd:!0,endsParent:!0,illegal:"[]{}%#'\""}]},
-{className:"type",begin:"\\b(sub)?type\\s+",end:"\\s+",keywords:"type",excludeBegin:!0,illegal:"[]{}%#'\""},c]}});b.registerLanguage("angelscript",function(a){var c={className:"built_in",begin:"\\b(void|bool|int|int8|int16|int32|int64|uint|uint8|uint16|uint32|uint64|string|ref|array|double|float|auto|dictionary)"},b={className:"symbol",begin:"[a-zA-Z0-9_]+@"},e={className:"keyword",begin:"<",end:">",contains:[c,b]};c.contains=[e];b.contains=[e];return{aliases:["asc"],keywords:"for in|0 break continue while do|0 return if else case switch namespace is cast or and xor not get|0 in inout|10 out override set|0 private public const default|0 final shared external mixin|10 enum typedef funcdef this super import from interface abstract|0 try catch protected explicit",
+{className:"type",begin:"\\b(sub)?type\\s+",end:"\\s+",keywords:"type",excludeBegin:!0,illegal:"[]{}%#'\""},c]}});b.registerLanguage("angelscript",function(a){var c={className:"built_in",begin:"\\b(void|bool|int|int8|int16|int32|int64|uint|uint8|uint16|uint32|uint64|string|ref|array|double|float|auto|dictionary)"},b={className:"symbol",begin:"[a-zA-Z0-9_]+@"},e={className:"keyword",begin:"<",end:">",contains:[c,b]};c.contains=[e];b.contains=[e];return{aliases:["asc"],keywords:"for in|0 break continue while do|0 return if else case switch namespace is cast or and xor not get|0 in inout|10 out override set|0 private public const default|0 final shared external mixin|10 enum typedef funcdef this super import from interface abstract|0 try catch protected explicit property",
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@@ -53,9 +53,9 @@
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Get-PSSessionConfiguration Get-PSSnapin Get-Random Get-ScheduledJob Get-ScheduledJobOption Get-Service Get-TraceSource Get-Transaction Get-TypeData Get-UICulture Get-Unique Get-Variable Get-Verb Get-WinEvent Get-WmiObject Get-WSManCredSSP Get-WSManInstance Group-Object Import-Alias Import-Clixml Import-Counter Import-Csv Import-IseSnippet Import-LocalizedData Import-PSSession Import-Module Invoke-AsWorkflow Invoke-Command Invoke-Expression Invoke-History Invoke-Item Invoke-RestMethod Invoke-WebRequest Invoke-WmiMethod Invoke-WSManAction Join-Path Limit-EventLog Measure-Command Measure-Object Move-Item Move-ItemProperty New-Alias New-Event New-EventLog New-IseSnippet New-Item New-ItemProperty New-JobTrigger New-Object New-Module New-ModuleManifest New-PSDrive New-PSSession New-PSSessionConfigurationFile New-PSSessionOption New-PSTransportOption New-PSWorkflowExecutionOption New-PSWorkflowSession New-ScheduledJobOption New-Service New-TimeSpan New-Variable New-WebServiceProxy New-WinEvent New-WSManInstance New-WSManSessionOption Out-Default Out-File Out-GridView Out-Host Out-Null Out-Printer Out-String Pop-Location Push-Location Read-Host Receive-Job Register-EngineEvent Register-ObjectEvent Register-PSSessionConfiguration Register-ScheduledJob Register-WmiEvent Remove-Computer Remove-Event Remove-EventLog Remove-Item Remove-ItemProperty Remove-Job Remove-JobTrigger Remove-Module Remove-PSBreakpoint Remove-PSDrive Remove-PSSession Remove-PSSnapin Remove-TypeData Remove-Variable Remove-WmiObject Remove-WSManInstance Rename-Computer Rename-Item Rename-ItemProperty Reset-ComputerMachinePassword Resolve-Path Restart-Computer Restart-Service Restore-Computer Resume-Job Resume-Service Save-Help Select-Object Select-String Select-Xml Send-MailMessage Set-Acl Set-Alias Set-AuthenticodeSignature Set-Content Set-Date Set-ExecutionPolicy Set-Item Set-ItemProperty Set-JobTrigger Set-Location Set-PSBreakpoint Set-PSDebug Set-PSSessionConfiguration Set-ScheduledJob Set-ScheduledJobOption Set-Service Set-StrictMode Set-TraceSource Set-Variable Set-WmiInstance Set-WSManInstance Set-WSManQuickConfig Show-Command Show-ControlPanelItem Show-EventLog Sort-Object Split-Path Start-Job Start-Process Start-Service Start-Sleep Start-Transaction Start-Transcript Stop-Computer Stop-Job Stop-Process Stop-Service Stop-Transcript Suspend-Job Suspend-Service Tee-Object Test-ComputerSecureChannel Test-Connection Test-ModuleManifest Test-Path Test-PSSessionConfigurationFile Trace-Command Unblock-File Undo-Transaction Unregister-Event Unregister-PSSessionConfiguration Unregister-ScheduledJob Update-FormatData Update-Help Update-List Update-TypeData Use-Transaction Wait-Event Wait-Job Wait-Process Where-Object Write-Debug Write-Error Write-EventLog Write-Host Write-Output Write-Progress Write-Verbose Write-Warning Add-MDTPersistentDrive Disable-MDTMonitorService Enable-MDTMonitorService Get-MDTDeploymentShareStatistics Get-MDTMonitorData Get-MDTOperatingSystemCatalog Get-MDTPersistentDrive Import-MDTApplication Import-MDTDriver Import-MDTOperatingSystem Import-MDTPackage Import-MDTTaskSequence New-MDTDatabase Remove-MDTMonitorData Remove-MDTPersistentDrive Restore-MDTPersistentDrive Set-MDTMonitorData Test-MDTDeploymentShare Test-MDTMonitorData Update-MDTDatabaseSchema Update-MDTDeploymentShare Update-MDTLinkedDS Update-MDTMedia Add-VamtProductKey Export-VamtData Find-VamtManagedMachine Get-VamtConfirmationId Get-VamtProduct Get-VamtProductKey Import-VamtData Initialize-VamtData Install-VamtConfirmationId Install-VamtProductActivation Install-VamtProductKey Update-VamtProduct Add-CIDatastore Add-KeyManagementServer Add-NodeKeys Add-NsxDynamicCriteria Add-NsxDynamicMemberSet Add-NsxEdgeInterfaceAddress Add-NsxFirewallExclusionListMember Add-NsxFirewallRuleMember Add-NsxIpSetMember Add-NsxLicense Add-NsxLoadBalancerPoolMember Add-NsxLoadBalancerVip Add-NsxSecondaryManager Add-NsxSecurityGroupMember Add-NsxSecurityPolicyRule Add-NsxSecurityPolicyRuleGroup Add-NsxSecurityPolicyRuleService Add-NsxServiceGroupMember Add-NsxTransportZoneMember Add-PassthroughDevice Add-VDSwitchPhysicalNetworkAdapter Add-VDSwitchVMHost Add-VMHost Add-VMHostNtpServer Add-VirtualSwitchPhysicalNetworkAdapter Add-XmlElement Add-vRACustomForm Add-vRAPrincipalToTenantRole Add-vRAReservationNetwork Add-vRAReservationStorage Clear-NsxEdgeInterface Clear-NsxManagerTimeSettings Compress-Archive Connect-CIServer Connect-CisServer Connect-HCXServer Connect-NIServer Connect-NsxLogicalSwitch Connect-NsxServer Connect-NsxtServer Connect-SrmServer Connect-VIServer Connect-Vmc Connect-vRAServer Connect-vRNIServer ConvertFrom-Markdown ConvertTo-MOFInstance Copy-DatastoreItem Copy-HardDisk Copy-NsxEdge Copy-VDisk Copy-VMGuestFile Debug-Runspace Disable-NsxEdgeSsh Disable-RunspaceDebug Disable-vRNIDataSource Disconnect-CIServer Disconnect-CisServer Disconnect-HCXServer Disconnect-NsxLogicalSwitch Disconnect-NsxServer Disconnect-NsxtServer Disconnect-SrmServer Disconnect-VIServer Disconnect-Vmc Disconnect-vRAServer Disconnect-vRNIServer Dismount-Tools Enable-NsxEdgeSsh Enable-RunspaceDebug Enable-vRNIDataSource Expand-Archive Export-NsxObject Export-SpbmStoragePolicy Export-VApp Export-VDPortGroup Export-VDSwitch Export-VMHostProfile Export-vRAIcon Export-vRAPackage Find-Command Find-DscResource Find-Module Find-NsxWhereVMUsed Find-Package Find-PackageProvider Find-RoleCapability Find-Script Format-Hex Format-VMHostDiskPartition Format-XML Generate-VersionInfo Get-AdvancedSetting Get-AlarmAction Get-AlarmActionTrigger Get-AlarmDefinition Get-Annotation Get-CDDrive Get-CIAccessControlRule Get-CIDatastore Get-CINetworkAdapter Get-CIRole Get-CIUser Get-CIVApp Get-CIVAppNetwork Get-CIVAppStartRule Get-CIVAppTemplate Get-CIVM Get-CIVMTemplate Get-CIView Get-Catalog Get-CisCommand Get-CisService Get-CloudCommand Get-Cluster Get-CompatibleVersionAddtionaPropertiesStr Get-ComplexResourceQualifier Get-ConfigurationErrorCount Get-ContentLibraryItem Get-CustomAttribute Get-DSCResourceModules Get-Datacenter Get-Datastore Get-DatastoreCluster Get-DrsClusterGroup Get-DrsRecommendation Get-DrsRule Get-DrsVMHostRule Get-DscResource Get-EdgeGateway Get-EncryptedPassword Get-ErrorReport Get-EsxCli Get-EsxTop Get-ExternalNetwork Get-FileHash Get-FloppyDrive Get-Folder Get-HAPrimaryVMHost Get-HCXAppliance Get-HCXApplianceCompute Get-HCXApplianceDVS Get-HCXApplianceDatastore Get-HCXApplianceNetwork Get-HCXContainer Get-HCXDatastore Get-HCXGateway Get-HCXInterconnectStatus Get-HCXJob Get-HCXMigration Get-HCXNetwork Get-HCXNetworkExtension Get-HCXReplication Get-HCXReplicationSnapshot Get-HCXService Get-HCXSite Get-HCXSitePairing Get-HCXVM Get-HardDisk Get-IScsiHbaTarget Get-InnerMostErrorRecord Get-InstallPath Get-InstalledModule Get-InstalledScript Get-Inventory Get-ItemPropertyValue Get-KeyManagementServer Get-KmipClientCertificate Get-KmsCluster Get-Log Get-LogType Get-MarkdownOption Get-Media Get-MofInstanceName Get-MofInstanceText Get-NetworkAdapter Get-NetworkPool Get-NfsUser Get-NicTeamingPolicy Get-NsxApplicableMember Get-NsxApplicableSecurityAction Get-NsxBackingDVSwitch Get-NsxBackingPortGroup Get-NsxCliDfwAddrSet Get-NsxCliDfwFilter Get-NsxCliDfwRule Get-NsxClusterStatus Get-NsxController Get-NsxDynamicCriteria Get-NsxDynamicMemberSet Get-NsxEdge Get-NsxEdgeBgp Get-NsxEdgeBgpNeighbour Get-NsxEdgeCertificate Get-NsxEdgeCsr Get-NsxEdgeFirewall Get-NsxEdgeFirewallRule Get-NsxEdgeInterface Get-NsxEdgeInterfaceAddress Get-NsxEdgeNat Get-NsxEdgeNatRule Get-NsxEdgeOspf Get-NsxEdgeOspfArea Get-NsxEdgeOspfInterface Get-NsxEdgePrefix Get-NsxEdgeRedistributionRule Get-NsxEdgeRouting Get-NsxEdgeStaticRoute Get-NsxEdgeSubInterface Get-NsxFirewallExclusionListMember Get-NsxFirewallGlobalConfiguration Get-NsxFirewallPublishStatus Get-NsxFirewallRule Get-NsxFirewallRuleMember Get-NsxFirewallSavedConfiguration Get-NsxFirewallSection Get-NsxFirewallThreshold Get-NsxIpPool Get-NsxIpSet Get-NsxLicense Get-NsxLoadBalancer Get-NsxLoadBalancerApplicationProfile Get-NsxLoadBalancerApplicationRule Get-NsxLoadBalancerMonitor Get-NsxLoadBalancerPool Get-NsxLoadBalancerPoolMember Get-NsxLoadBalancerStats Get-NsxLoadBalancerVip Get-NsxLogicalRouter Get-NsxLogicalRouterBgp Get-NsxLogicalRouterBgpNeighbour Get-NsxLogicalRouterBridge Get-NsxLogicalRouterBridging Get-NsxLogicalRouterInterface Get-NsxLogicalRouterOspf Get-NsxLogicalRouterOspfArea Get-NsxLogicalRouterOspfInterface Get-NsxLogicalRouterPrefix Get-NsxLogicalRouterRedistributionRule Get-NsxLogicalRouterRouting Get-NsxLogicalRouterStaticRoute Get-NsxLogicalSwitch Get-NsxMacSet Get-NsxManagerBackup Get-NsxManagerCertificate Get-NsxManagerComponentSummary Get-NsxManagerNetwork Get-NsxManagerRole Get-NsxManagerSsoConfig Get-NsxManagerSyncStatus Get-NsxManagerSyslogServer Get-NsxManagerSystemSummary Get-NsxManagerTimeSettings Get-NsxManagerVcenterConfig Get-NsxSecondaryManager Get-NsxSecurityGroup Get-NsxSecurityGroupEffectiveIpAddress Get-NsxSecurityGroupEffectiveMacAddress Get-NsxSecurityGroupEffectiveMember Get-NsxSecurityGroupEffectiveVirtualMachine Get-NsxSecurityGroupEffectiveVnic Get-NsxSecurityGroupMemberTypes Get-NsxSecurityPolicy Get-NsxSecurityPolicyHighestUsedPrecedence Get-NsxSecurityPolicyRule Get-NsxSecurityTag Get-NsxSecurityTagAssignment Get-NsxSegmentIdRange Get-NsxService Get-NsxServiceDefinition Get-NsxServiceGroup Get-NsxServiceGroupMember Get-NsxServiceProfile Get-NsxSpoofguardNic Get-NsxSpoofguardPolicy Get-NsxSslVpn Get-NsxSslVpnAuthServer Get-NsxSslVpnClientInstallationPackage Get-NsxSslVpnIpPool Get-NsxSslVpnPrivateNetwork Get-NsxSslVpnUser Get-NsxTransportZone Get-NsxUserRole Get-NsxVdsContext Get-NsxtPolicyService Get-NsxtService Get-OSCustomizationNicMapping Get-OSCustomizationSpec Get-Org Get-OrgNetwork Get-OrgVdc Get-OrgVdcNetwork Get-OvfConfiguration Get-PSCurrentConfigurationNode Get-PSDefaultConfigurationDocument Get-PSMetaConfigDocumentInstVersionInfo Get-PSMetaConfigurationProcessed Get-PSReadLineKeyHandler Get-PSReadLineOption Get-PSRepository Get-PSTopConfigurationName Get-PSVersion Get-Package Get-PackageProvider Get-PackageSource Get-PassthroughDevice Get-PositionInfo Get-PowerCLICommunity Get-PowerCLIConfiguration Get-PowerCLIHelp Get-PowerCLIVersion Get-PowerNsxVersion Get-ProviderVdc Get-PublicKeyFromFile Get-PublicKeyFromStore Get-ResourcePool Get-Runspace Get-RunspaceDebug Get-ScsiController Get-ScsiLun Get-ScsiLunPath Get-SecurityInfo Get-SecurityPolicy Get-Snapshot Get-SpbmCapability Get-SpbmCompatibleStorage Get-SpbmEntityConfiguration Get-SpbmFaultDomain Get-SpbmPointInTimeReplica Get-SpbmReplicationGroup Get-SpbmReplicationPair Get-SpbmStoragePolicy Get-Stat Get-StatInterval Get-StatType Get-Tag Get-TagAssignment Get-TagCategory Get-Task Get-Template Get-TimeZone Get-Uptime Get-UsbDevice Get-VAIOFilter Get-VApp Get-VDBlockedPolicy Get-VDPort Get-VDPortgroup Get-VDPortgroupOverridePolicy Get-VDSecurityPolicy Get-VDSwitch Get-VDSwitchPrivateVlan Get-VDTrafficShapingPolicy Get-VDUplinkLacpPolicy Get-VDUplinkTeamingPolicy Get-VDisk Get-VIAccount Get-VICommand Get-VICredentialStoreItem Get-VIEvent Get-VIObjectByVIView Get-VIPermission Get-VIPrivilege Get-VIProperty Get-VIRole Get-VM Get-VMGuest Get-VMHost Get-VMHostAccount Get-VMHostAdvancedConfiguration Get-VMHostAuthentication Get-VMHostAvailableTimeZone Get-VMHostDiagnosticPartition Get-VMHostDisk Get-VMHostDiskPartition Get-VMHostFirewallDefaultPolicy Get-VMHostFirewallException Get-VMHostFirmware Get-VMHostHardware Get-VMHostHba Get-VMHostModule Get-VMHostNetwork Get-VMHostNetworkAdapter Get-VMHostNtpServer Get-VMHostPatch Get-VMHostPciDevice Get-VMHostProfile Get-VMHostProfileImageCacheConfiguration Get-VMHostProfileRequiredInput Get-VMHostProfileStorageDeviceConfiguration Get-VMHostProfileUserConfiguration Get-VMHostProfileVmPortGroupConfiguration Get-VMHostRoute Get-VMHostService Get-VMHostSnmp Get-VMHostStartPolicy Get-VMHostStorage Get-VMHostSysLogServer Get-VMQuestion Get-VMResourceConfiguration Get-VMStartPolicy Get-VTpm Get-VTpmCSR Get-VTpmCertificate Get-VasaProvider Get-VasaStorageArray Get-View Get-VirtualPortGroup Get-VirtualSwitch Get-VmcSddcNetworkService Get-VmcService Get-VsanClusterConfiguration Get-VsanComponent Get-VsanDisk Get-VsanDiskGroup Get-VsanEvacuationPlan Get-VsanFaultDomain Get-VsanIscsiInitiatorGroup Get-VsanIscsiInitiatorGroupTargetAssociation Get-VsanIscsiLun Get-VsanIscsiTarget Get-VsanObject Get-VsanResyncingComponent Get-VsanRuntimeInfo Get-VsanSpaceUsage Get-VsanStat Get-VsanView Get-vRAApplianceServiceStatus Get-vRAAuthorizationRole Get-vRABlueprint Get-vRABusinessGroup Get-vRACatalogItem Get-vRACatalogItemRequestTemplate Get-vRACatalogPrincipal Get-vRAComponentRegistryService Get-vRAComponentRegistryServiceEndpoint Get-vRAComponentRegistryServiceStatus Get-vRAContent Get-vRAContentData Get-vRAContentType Get-vRACustomForm Get-vRAEntitledCatalogItem Get-vRAEntitledService Get-vRAEntitlement Get-vRAExternalNetworkProfile Get-vRAGroupPrincipal Get-vRAIcon Get-vRANATNetworkProfile Get-vRANetworkProfileIPAddressList Get-vRANetworkProfileIPRangeSummary Get-vRAPackage Get-vRAPackageContent Get-vRAPropertyDefinition Get-vRAPropertyGroup Get-vRARequest Get-vRARequestDetail Get-vRAReservation Get-vRAReservationComputeResource Get-vRAReservationComputeResourceMemory Get-vRAReservationComputeResourceNetwork Get-vRAReservationComputeResourceResourcePool Get-vRAReservationComputeResourceStorage Get-vRAReservationPolicy Get-vRAReservationTemplate Get-vRAReservationType Get-vRAResource Get-vRAResourceAction Get-vRAResourceActionRequestTemplate Get-vRAResourceMetric Get-vRAResourceOperation Get-vRAResourceType Get-vRARoutedNetworkProfile Get-vRAService Get-vRAServiceBlueprint Get-vRASourceMachine Get-vRAStorageReservationPolicy Get-vRATenant Get-vRATenantDirectory Get-vRATenantDirectoryStatus Get-vRATenantRole Get-vRAUserPrincipal Get-vRAUserPrincipalGroupMembership Get-vRAVersion Get-vRNIAPIVersion Get-vRNIApplication Get-vRNIApplicationTier Get-vRNIDataSource Get-vRNIDataSourceSNMPConfig Get-vRNIDatastore Get-vRNIDistributedSwitch Get-vRNIDistributedSwitchPortGroup Get-vRNIEntity Get-vRNIEntityName Get-vRNIFirewallRule Get-vRNIFlow Get-vRNIHost Get-vRNIHostVMKNic Get-vRNIIPSet Get-vRNIL2Network Get-vRNINSXManager Get-vRNINodes Get-vRNIProblem Get-vRNIRecommendedRules Get-vRNIRecommendedRulesNsxBundle Get-vRNISecurityGroup Get-vRNISecurityTag Get-vRNIService Get-vRNIServiceGroup Get-vRNIVM Get-vRNIVMvNIC Get-vRNIvCenter Get-vRNIvCenterCluster Get-vRNIvCenterDatacenter Get-vRNIvCenterFolder Grant-NsxSpoofguardNicApproval Import-CIVApp Import-CIVAppTemplate Import-NsxObject Import-PackageProvider Import-PowerShellDataFile Import-SpbmStoragePolicy Import-VApp Import-VMHostProfile Import-vRAContentData Import-vRAIcon Import-vRAPackage Initialize-ConfigurationRuntimeState Install-Module Install-NsxCluster Install-Package Install-PackageProvider Install-Script Install-VMHostPatch Invoke-DrsRecommendation Invoke-NsxCli Invoke-NsxClusterResolveAll Invoke-NsxManagerSync Invoke-NsxRestMethod Invoke-NsxWebRequest Invoke-VMHostProfile Invoke-VMScript Invoke-XpathQuery Invoke-vRADataCollection Invoke-vRARestMethod Invoke-vRATenantDirectorySync Invoke-vRNIRestMethod Join-String Mount-Tools Move-Cluster Move-Datacenter Move-Datastore Move-Folder Move-HardDisk Move-Inventory Move-NsxSecurityPolicyRule Move-ResourcePool Move-Template Move-VApp Move-VDisk Move-VM Move-VMHost New-AdvancedSetting New-AlarmAction New-AlarmActionTrigger New-CDDrive New-CIAccessControlRule New-CIVApp New-CIVAppNetwork New-CIVAppTemplate New-CIVM New-Cluster New-CustomAttribute New-Datacenter New-Datastore New-DatastoreCluster New-DatastoreDrive New-DrsClusterGroup New-DrsRule New-DrsVMHostRule New-DscChecksum New-FloppyDrive New-Folder New-Guid New-HCXAppliance New-HCXMigration New-HCXNetworkExtension New-HCXNetworkMapping New-HCXReplication New-HCXSitePairing New-HCXStaticRoute New-HardDisk New-IScsiHbaTarget New-KmipClientCertificate New-NetworkAdapter New-NfsUser New-NsxAddressSpec New-NsxClusterVxlanConfig New-NsxController New-NsxDynamicCriteriaSpec New-NsxEdge New-NsxEdgeBgpNeighbour New-NsxEdgeCsr New-NsxEdgeFirewallRule New-NsxEdgeInterfaceSpec New-NsxEdgeNatRule New-NsxEdgeOspfArea New-NsxEdgeOspfInterface New-NsxEdgePrefix New-NsxEdgeRedistributionRule New-NsxEdgeSelfSignedCertificate New-NsxEdgeStaticRoute New-NsxEdgeSubInterface New-NsxEdgeSubInterfaceSpec New-NsxFirewallRule New-NsxFirewallSavedConfiguration New-NsxFirewallSection New-NsxIpPool New-NsxIpSet New-NsxLoadBalancerApplicationProfile New-NsxLoadBalancerApplicationRule New-NsxLoadBalancerMemberSpec New-NsxLoadBalancerMonitor New-NsxLoadBalancerPool New-NsxLogicalRouter New-NsxLogicalRouterBgpNeighbour New-NsxLogicalRouterBridge New-NsxLogicalRouterInterface New-NsxLogicalRouterInterfaceSpec New-NsxLogicalRouterOspfArea New-NsxLogicalRouterOspfInterface New-NsxLogicalRouterPrefix New-NsxLogicalRouterRedistributionRule New-NsxLogicalRouterStaticRoute New-NsxLogicalSwitch New-NsxMacSet New-NsxManager New-NsxSecurityGroup New-NsxSecurityPolicy New-NsxSecurityPolicyAssignment New-NsxSecurityPolicyFirewallRuleSpec New-NsxSecurityPolicyGuestIntrospectionSpec New-NsxSecurityPolicyNetworkIntrospectionSpec New-NsxSecurityTag New-NsxSecurityTagAssignment New-NsxSegmentIdRange New-NsxService New-NsxServiceGroup New-NsxSpoofguardPolicy New-NsxSslVpnAuthServer New-NsxSslVpnClientInstallationPackage New-NsxSslVpnIpPool New-NsxSslVpnPrivateNetwork New-NsxSslVpnUser New-NsxTransportZone New-NsxVdsContext New-OSCustomizationNicMapping New-OSCustomizationSpec New-Org New-OrgNetwork New-OrgVdc New-OrgVdcNetwork New-ResourcePool New-ScriptFileInfo New-ScsiController New-Snapshot New-SpbmRule New-SpbmRuleSet New-SpbmStoragePolicy New-StatInterval New-Tag New-TagAssignment New-TagCategory New-Template New-TemporaryFile New-VAIOFilter New-VApp New-VDPortgroup New-VDSwitch New-VDSwitchPrivateVlan New-VDisk New-VICredentialStoreItem New-VIInventoryDrive New-VIPermission New-VIProperty New-VIRole New-VISamlSecurityContext New-VM New-VMHostAccount New-VMHostNetworkAdapter New-VMHostProfile New-VMHostProfileVmPortGroupConfiguration New-VMHostRoute New-VTpm New-VasaProvider New-VcsOAuthSecurityContext New-VirtualPortGroup New-VirtualSwitch New-VsanDisk New-VsanDiskGroup New-VsanFaultDomain New-VsanIscsiInitiatorGroup New-VsanIscsiInitiatorGroupTargetAssociation New-VsanIscsiLun New-VsanIscsiTarget New-vRABusinessGroup New-vRAEntitlement New-vRAExternalNetworkProfile New-vRAGroupPrincipal New-vRANATNetworkProfile New-vRANetworkProfileIPRangeDefinition New-vRAPackage New-vRAPropertyDefinition New-vRAPropertyGroup New-vRAReservation New-vRAReservationNetworkDefinition New-vRAReservationPolicy New-vRAReservationStorageDefinition New-vRARoutedNetworkProfile New-vRAService New-vRAStorageReservationPolicy New-vRATenant New-vRATenantDirectory New-vRAUserPrincipal New-vRNIApplication New-vRNIApplicationTier New-vRNIDataSource Open-VMConsoleWindow Publish-Module Publish-NsxSpoofguardPolicy Publish-Script Register-PSRepository Register-PackageSource Remove-AdvancedSetting Remove-AlarmAction Remove-AlarmActionTrigger Remove-Alias Remove-CDDrive Remove-CIAccessControlRule Remove-CIVApp Remove-CIVAppNetwork Remove-CIVAppTemplate Remove-Cluster Remove-CustomAttribute Remove-Datacenter Remove-Datastore Remove-DatastoreCluster Remove-DrsClusterGroup Remove-DrsRule Remove-DrsVMHostRule Remove-FloppyDrive Remove-Folder Remove-HCXAppliance Remove-HCXNetworkExtension Remove-HCXReplication Remove-HCXSitePairing Remove-HardDisk Remove-IScsiHbaTarget Remove-Inventory Remove-KeyManagementServer Remove-NetworkAdapter Remove-NfsUser Remove-NsxCluster Remove-NsxClusterVxlanConfig Remove-NsxController Remove-NsxDynamicCriteria Remove-NsxDynamicMemberSet Remove-NsxEdge Remove-NsxEdgeBgpNeighbour Remove-NsxEdgeCertificate Remove-NsxEdgeCsr Remove-NsxEdgeFirewallRule Remove-NsxEdgeInterfaceAddress Remove-NsxEdgeNatRule Remove-NsxEdgeOspfArea Remove-NsxEdgeOspfInterface Remove-NsxEdgePrefix Remove-NsxEdgeRedistributionRule Remove-NsxEdgeStaticRoute Remove-NsxEdgeSubInterface Remove-NsxFirewallExclusionListMember Remove-NsxFirewallRule Remove-NsxFirewallRuleMember Remove-NsxFirewallSavedConfiguration Remove-NsxFirewallSection Remove-NsxIpPool Remove-NsxIpSet Remove-NsxIpSetMember Remove-NsxLoadBalancerApplicationProfile Remove-NsxLoadBalancerMonitor Remove-NsxLoadBalancerPool Remove-NsxLoadBalancerPoolMember Remove-NsxLoadBalancerVip Remove-NsxLogicalRouter Remove-NsxLogicalRouterBgpNeighbour Remove-NsxLogicalRouterBridge Remove-NsxLogicalRouterInterface Remove-NsxLogicalRouterOspfArea Remove-NsxLogicalRouterOspfInterface Remove-NsxLogicalRouterPrefix Remove-NsxLogicalRouterRedistributionRule Remove-NsxLogicalRouterStaticRoute Remove-NsxLogicalSwitch Remove-NsxMacSet Remove-NsxSecondaryManager Remove-NsxSecurityGroup Remove-NsxSecurityGroupMember Remove-NsxSecurityPolicy Remove-NsxSecurityPolicyAssignment Remove-NsxSecurityPolicyRule Remove-NsxSecurityPolicyRuleGroup Remove-NsxSecurityPolicyRuleService Remove-NsxSecurityTag Remove-NsxSecurityTagAssignment Remove-NsxSegmentIdRange Remove-NsxService Remove-NsxServiceGroup Remove-NsxSpoofguardPolicy Remove-NsxSslVpnClientInstallationPackage Remove-NsxSslVpnIpPool Remove-NsxSslVpnPrivateNetwork Remove-NsxSslVpnUser Remove-NsxTransportZone Remove-NsxTransportZoneMember Remove-NsxVdsContext Remove-OSCustomizationNicMapping Remove-OSCustomizationSpec Remove-Org Remove-OrgNetwork Remove-OrgVdc Remove-OrgVdcNetwork Remove-PSReadLineKeyHandler Remove-PassthroughDevice Remove-ResourcePool Remove-Snapshot Remove-SpbmStoragePolicy Remove-StatInterval Remove-Tag Remove-TagAssignment Remove-TagCategory Remove-Template Remove-UsbDevice Remove-VAIOFilter Remove-VApp Remove-VDPortGroup Remove-VDSwitch Remove-VDSwitchPhysicalNetworkAdapter Remove-VDSwitchPrivateVlan Remove-VDSwitchVMHost Remove-VDisk Remove-VICredentialStoreItem Remove-VIPermission Remove-VIProperty Remove-VIRole Remove-VM Remove-VMHost Remove-VMHostAccount Remove-VMHostNetworkAdapter Remove-VMHostNtpServer Remove-VMHostProfile Remove-VMHostProfileVmPortGroupConfiguration Remove-VMHostRoute Remove-VTpm Remove-VasaProvider Remove-VirtualPortGroup Remove-VirtualSwitch Remove-VirtualSwitchPhysicalNetworkAdapter Remove-VsanDisk Remove-VsanDiskGroup Remove-VsanFaultDomain Remove-VsanIscsiInitiatorGroup Remove-VsanIscsiInitiatorGroupTargetAssociation Remove-VsanIscsiLun Remove-VsanIscsiTarget Remove-vRABusinessGroup Remove-vRACustomForm Remove-vRAExternalNetworkProfile Remove-vRAGroupPrincipal Remove-vRAIcon Remove-vRANATNetworkProfile Remove-vRAPackage Remove-vRAPrincipalFromTenantRole Remove-vRAPropertyDefinition Remove-vRAPropertyGroup Remove-vRAReservation Remove-vRAReservationNetwork Remove-vRAReservationPolicy Remove-vRAReservationStorage Remove-vRARoutedNetworkProfile Remove-vRAService Remove-vRAStorageReservationPolicy Remove-vRATenant Remove-vRATenantDirectory Remove-vRAUserPrincipal Remove-vRNIApplication Remove-vRNIApplicationTier Remove-vRNIDataSource Repair-NsxEdge Repair-VsanObject Request-vRACatalogItem Request-vRAResourceAction Restart-CIVApp Restart-CIVAppGuest Restart-CIVM Restart-CIVMGuest Restart-VM Restart-VMGuest Restart-VMHost Restart-VMHostService Resume-HCXReplication Revoke-NsxSpoofguardNicApproval Save-Module Save-Package Save-Script Search-Cloud Set-AdvancedSetting Set-AlarmDefinition Set-Annotation Set-CDDrive Set-CIAccessControlRule Set-CINetworkAdapter Set-CIVApp Set-CIVAppNetwork Set-CIVAppStartRule Set-CIVAppTemplate Set-Cluster Set-CustomAttribute Set-Datacenter Set-Datastore Set-DatastoreCluster Set-DrsClusterGroup Set-DrsRule Set-DrsVMHostRule Set-FloppyDrive Set-Folder Set-HCXAppliance Set-HCXMigration Set-HCXReplication Set-HardDisk Set-IScsiHbaTarget Set-KeyManagementServer Set-KmsCluster Set-MarkdownOption Set-NetworkAdapter Set-NfsUser Set-NicTeamingPolicy Set-NodeExclusiveResources Set-NodeManager Set-NodeResourceSource Set-NodeResources Set-NsxEdge Set-NsxEdgeBgp Set-NsxEdgeFirewall Set-NsxEdgeInterface Set-NsxEdgeNat Set-NsxEdgeOspf Set-NsxEdgeRouting Set-NsxFirewallGlobalConfiguration Set-NsxFirewallRule Set-NsxFirewallSavedConfiguration Set-NsxFirewallThreshold Set-NsxLoadBalancer Set-NsxLoadBalancerPoolMember Set-NsxLogicalRouter Set-NsxLogicalRouterBgp Set-NsxLogicalRouterBridging Set-NsxLogicalRouterInterface Set-NsxLogicalRouterOspf Set-NsxLogicalRouterRouting Set-NsxManager Set-NsxManagerRole Set-NsxManagerTimeSettings Set-NsxSecurityPolicy Set-NsxSecurityPolicyFirewallRule Set-NsxSslVpn Set-OSCustomizationNicMapping Set-OSCustomizationSpec Set-Org Set-OrgNetwork Set-OrgVdc Set-OrgVdcNetwork Set-PSCurrentConfigurationNode Set-PSDefaultConfigurationDocument Set-PSMetaConfigDocInsProcessedBeforeMeta Set-PSMetaConfigVersionInfoV2 Set-PSReadLineKeyHandler Set-PSReadLineOption Set-PSRepository Set-PSTopConfigurationName Set-PackageSource Set-PowerCLIConfiguration Set-ResourcePool Set-ScsiController Set-ScsiLun Set-ScsiLunPath Set-SecurityPolicy Set-Snapshot Set-SpbmEntityConfiguration Set-SpbmStoragePolicy Set-StatInterval Set-Tag Set-TagCategory Set-Template Set-VAIOFilter Set-VApp Set-VDBlockedPolicy Set-VDPort Set-VDPortgroup Set-VDPortgroupOverridePolicy Set-VDSecurityPolicy Set-VDSwitch Set-VDTrafficShapingPolicy Set-VDUplinkLacpPolicy Set-VDUplinkTeamingPolicy Set-VDVlanConfiguration Set-VDisk Set-VIPermission Set-VIRole Set-VM Set-VMHost Set-VMHostAccount Set-VMHostAdvancedConfiguration Set-VMHostAuthentication Set-VMHostDiagnosticPartition Set-VMHostFirewallDefaultPolicy Set-VMHostFirewallException Set-VMHostFirmware Set-VMHostHba Set-VMHostModule Set-VMHostNetwork Set-VMHostNetworkAdapter Set-VMHostProfile Set-VMHostProfileImageCacheConfiguration Set-VMHostProfileStorageDeviceConfiguration Set-VMHostProfileUserConfiguration Set-VMHostProfileVmPortGroupConfiguration Set-VMHostRoute Set-VMHostService Set-VMHostSnmp Set-VMHostStartPolicy Set-VMHostStorage Set-VMHostSysLogServer Set-VMQuestion Set-VMResourceConfiguration Set-VMStartPolicy Set-VTpm Set-VirtualPortGroup Set-VirtualSwitch Set-VsanClusterConfiguration Set-VsanFaultDomain Set-VsanIscsiInitiatorGroup Set-VsanIscsiLun Set-VsanIscsiTarget Set-vRABusinessGroup Set-vRACatalogItem Set-vRACustomForm Set-vRAEntitlement Set-vRAExternalNetworkProfile Set-vRANATNetworkProfile Set-vRAReservation Set-vRAReservationNetwork Set-vRAReservationPolicy Set-vRAReservationStorage Set-vRARoutedNetworkProfile Set-vRAService Set-vRAStorageReservationPolicy Set-vRATenant Set-vRATenantDirectory Set-vRAUserPrincipal Set-vRNIDataSourceSNMPConfig Show-Markdown Start-CIVApp Start-CIVM Start-HCXMigration Start-HCXReplication Start-SpbmReplicationFailover Start-SpbmReplicationPrepareFailover Start-SpbmReplicationPromote Start-SpbmReplicationReverse Start-SpbmReplicationTestFailover Start-ThreadJob Start-VApp Start-VM Start-VMHost Start-VMHostService Start-VsanClusterDiskUpdate Start-VsanClusterRebalance Start-VsanEncryptionConfiguration Stop-CIVApp Stop-CIVAppGuest Stop-CIVM Stop-CIVMGuest Stop-SpbmReplicationTestFailover Stop-Task Stop-VApp Stop-VM Stop-VMGuest Stop-VMHost Stop-VMHostService Stop-VsanClusterRebalance Suspend-CIVApp Suspend-CIVM Suspend-HCXReplication Suspend-VM Suspend-VMGuest Suspend-VMHost Sync-SpbmReplicationGroup Test-ConflictingResources Test-HCXMigration Test-HCXReplication Test-Json Test-ModuleReloadRequired Test-MofInstanceText Test-NodeManager Test-NodeResourceSource Test-NodeResources Test-ScriptFileInfo Test-VMHostProfileCompliance Test-VMHostSnmp Test-VsanClusterHealth Test-VsanNetworkPerformance Test-VsanStoragePerformance Test-VsanVMCreation Test-vRAPackage Uninstall-Module Uninstall-Package Uninstall-Script Unlock-VM Unregister-PSRepository Unregister-PackageSource Update-ConfigurationDocumentRef Update-ConfigurationErrorCount Update-DependsOn Update-LocalConfigManager Update-Module Update-ModuleManifest Update-ModuleVersion Update-PowerNsx Update-Script Update-ScriptFileInfo Update-Tools Update-VsanHclDatabase ValidateUpdate-ConfigurationData Wait-Debugger Wait-NsxControllerJob Wait-NsxGenericJob Wait-NsxJob Wait-Task Wait-Tools Write-Information Write-Log Write-MetaConfigFile Write-NodeMOFFile",
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+return{aliases:["ps","ps1"],lexemes:/-?[A-z\.\-]+/,case_insensitive:!0,keywords:{keyword:"if else foreach return function do while until elseif begin for trap data dynamicparam end break throw param continue finally in switch exit filter try process catchValidateNoCircleInNodeResources ValidateNodeExclusiveResources ValidateNodeManager ValidateNodeResources ValidateNodeResourceSource ValidateNoNameNodeResources ThrowError IsHiddenResourceIsPatternMatched ",built_in:"Add-Computer Add-Content Add-History Add-JobTrigger Add-Member Add-PSSnapin Add-Type Checkpoint-Computer Clear-Content Clear-EventLog Clear-History Clear-Host Clear-Item Clear-ItemProperty Clear-Variable Compare-Object Complete-Transaction Connect-PSSession Connect-WSMan Convert-Path ConvertFrom-Csv ConvertFrom-Json ConvertFrom-SecureString ConvertFrom-StringData ConvertTo-Csv ConvertTo-Html ConvertTo-Json ConvertTo-SecureString ConvertTo-Xml Copy-Item Copy-ItemProperty Debug-Process Disable-ComputerRestore Disable-JobTrigger Disable-PSBreakpoint Disable-PSRemoting Disable-PSSessionConfiguration Disable-WSManCredSSP Disconnect-PSSession Disconnect-WSMan Disable-ScheduledJob Enable-ComputerRestore Enable-JobTrigger Enable-PSBreakpoint Enable-PSRemoting Enable-PSSessionConfiguration Enable-ScheduledJob Enable-WSManCredSSP Enter-PSSession Exit-PSSession Export-Alias Export-Clixml Export-Console Export-Counter Export-Csv Export-FormatData Export-ModuleMember Export-PSSession ForEach-Object Format-Custom Format-List Format-Table Format-Wide Get-Acl Get-Alias Get-AuthenticodeSignature Get-ChildItem Get-Command Get-ComputerRestorePoint Get-Content Get-ControlPanelItem Get-Counter Get-Credential Get-Culture Get-Date Get-Event Get-EventLog Get-EventSubscriber Get-ExecutionPolicy Get-FormatData Get-Host Get-HotFix Get-Help Get-History Get-IseSnippet Get-Item Get-ItemProperty Get-Job Get-JobTrigger Get-Location Get-Member Get-Module Get-PfxCertificate Get-Process Get-PSBreakpoint Get-PSCallStack Get-PSDrive Get-PSProvider Get-PSSession Get-PSSessionConfiguration Get-PSSnapin Get-Random Get-ScheduledJob Get-ScheduledJobOption Get-Service Get-TraceSource Get-Transaction Get-TypeData Get-UICulture Get-Unique Get-Variable Get-Verb Get-WinEvent Get-WmiObject Get-WSManCredSSP Get-WSManInstance Group-Object Import-Alias Import-Clixml Import-Counter Import-Csv Import-IseSnippet Import-LocalizedData Import-PSSession Import-Module Invoke-AsWorkflow Invoke-Command Invoke-Expression Invoke-History Invoke-Item Invoke-RestMethod Invoke-WebRequest Invoke-WmiMethod Invoke-WSManAction Join-Path Limit-EventLog Measure-Command Measure-Object Move-Item Move-ItemProperty New-Alias New-Event New-EventLog New-IseSnippet New-Item New-ItemProperty New-JobTrigger New-Object New-Module New-ModuleManifest New-PSDrive New-PSSession New-PSSessionConfigurationFile New-PSSessionOption New-PSTransportOption New-PSWorkflowExecutionOption New-PSWorkflowSession New-ScheduledJobOption New-Service New-TimeSpan New-Variable New-WebServiceProxy New-WinEvent New-WSManInstance New-WSManSessionOption Out-Default Out-File Out-GridView Out-Host Out-Null Out-Printer Out-String Pop-Location Push-Location Read-Host Receive-Job Register-EngineEvent Register-ObjectEvent Register-PSSessionConfiguration Register-ScheduledJob Register-WmiEvent Remove-Computer Remove-Event Remove-EventLog Remove-Item Remove-ItemProperty Remove-Job Remove-JobTrigger Remove-Module Remove-PSBreakpoint Remove-PSDrive Remove-PSSession Remove-PSSnapin Remove-TypeData Remove-Variable Remove-WmiObject Remove-WSManInstance Rename-Computer Rename-Item Rename-ItemProperty Reset-ComputerMachinePassword Resolve-Path Restart-Computer Restart-Service Restore-Computer Resume-Job Resume-Service Save-Help Select-Object Select-String Select-Xml Send-MailMessage Set-Acl Set-Alias Set-AuthenticodeSignature Set-Content Set-Date Set-ExecutionPolicy Set-Item Set-ItemProperty Set-JobTrigger Set-Location Set-PSBreakpoint Set-PSDebug Set-PSSessionConfiguration Set-ScheduledJob Set-ScheduledJobOption Set-Service Set-StrictMode Set-TraceSource Set-Variable Set-WmiInstance Set-WSManInstance Set-WSManQuickConfig Show-Command Show-ControlPanelItem Show-EventLog Sort-Object Split-Path Start-Job Start-Process Start-Service Start-Sleep Start-Transaction Start-Transcript Stop-Computer Stop-Job Stop-Process Stop-Service Stop-Transcript Suspend-Job Suspend-Service Tee-Object Test-ComputerSecureChannel Test-Connection Test-ModuleManifest Test-Path Test-PSSessionConfigurationFile Trace-Command Unblock-File Undo-Transaction Unregister-Event Unregister-PSSessionConfiguration Unregister-ScheduledJob Update-FormatData Update-Help Update-List Update-TypeData Use-Transaction Wait-Event Wait-Job Wait-Process Where-Object Write-Debug Write-Error Write-EventLog Write-Host Write-Output Write-Progress Write-Verbose Write-Warning Add-MDTPersistentDrive Disable-MDTMonitorService Enable-MDTMonitorService Get-MDTDeploymentShareStatistics Get-MDTMonitorData Get-MDTOperatingSystemCatalog Get-MDTPersistentDrive Import-MDTApplication Import-MDTDriver Import-MDTOperatingSystem Import-MDTPackage Import-MDTTaskSequence New-MDTDatabase Remove-MDTMonitorData Remove-MDTPersistentDrive Restore-MDTPersistentDrive Set-MDTMonitorData Test-MDTDeploymentShare Test-MDTMonitorData Update-MDTDatabaseSchema Update-MDTDeploymentShare Update-MDTLinkedDS Update-MDTMedia Add-VamtProductKey Export-VamtData Find-VamtManagedMachine Get-VamtConfirmationId Get-VamtProduct Get-VamtProductKey Import-VamtData Initialize-VamtData Install-VamtConfirmationId Install-VamtProductActivation Install-VamtProductKey Update-VamtProduct Add-CIDatastore Add-KeyManagementServer Add-NodeKeys Add-NsxDynamicCriteria Add-NsxDynamicMemberSet Add-NsxEdgeInterfaceAddress Add-NsxFirewallExclusionListMember Add-NsxFirewallRuleMember Add-NsxIpSetMember Add-NsxLicense Add-NsxLoadBalancerPoolMember Add-NsxLoadBalancerVip Add-NsxSecondaryManager Add-NsxSecurityGroupMember Add-NsxSecurityPolicyRule Add-NsxSecurityPolicyRuleGroup Add-NsxSecurityPolicyRuleService Add-NsxServiceGroupMember Add-NsxTransportZoneMember Add-PassthroughDevice Add-VDSwitchPhysicalNetworkAdapter Add-VDSwitchVMHost Add-VMHost Add-VMHostNtpServer Add-VirtualSwitchPhysicalNetworkAdapter Add-XmlElement Add-vRACustomForm Add-vRAPrincipalToTenantRole Add-vRAReservationNetwork Add-vRAReservationStorage Clear-NsxEdgeInterface Clear-NsxManagerTimeSettings Compress-Archive Connect-CIServer Connect-CisServer Connect-HCXServer Connect-NIServer Connect-NsxLogicalSwitch Connect-NsxServer Connect-NsxtServer Connect-SrmServer Connect-VIServer Connect-Vmc Connect-vRAServer Connect-vRNIServer ConvertFrom-Markdown ConvertTo-MOFInstance Copy-DatastoreItem Copy-HardDisk Copy-NsxEdge Copy-VDisk Copy-VMGuestFile Debug-Runspace Disable-NsxEdgeSsh Disable-RunspaceDebug Disable-vRNIDataSource Disconnect-CIServer Disconnect-CisServer Disconnect-HCXServer Disconnect-NsxLogicalSwitch Disconnect-NsxServer Disconnect-NsxtServer Disconnect-SrmServer Disconnect-VIServer Disconnect-Vmc Disconnect-vRAServer Disconnect-vRNIServer Dismount-Tools Enable-NsxEdgeSsh Enable-RunspaceDebug Enable-vRNIDataSource Expand-Archive Export-NsxObject Export-SpbmStoragePolicy Export-VApp Export-VDPortGroup Export-VDSwitch Export-VMHostProfile Export-vRAIcon Export-vRAPackage Find-Command Find-DscResource Find-Module Find-NsxWhereVMUsed Find-Package Find-PackageProvider Find-RoleCapability Find-Script Format-Hex Format-VMHostDiskPartition Format-XML Generate-VersionInfo Get-AdvancedSetting Get-AlarmAction Get-AlarmActionTrigger Get-AlarmDefinition Get-Annotation Get-CDDrive Get-CIAccessControlRule Get-CIDatastore Get-CINetworkAdapter Get-CIRole Get-CIUser Get-CIVApp Get-CIVAppNetwork Get-CIVAppStartRule Get-CIVAppTemplate Get-CIVM Get-CIVMTemplate Get-CIView Get-Catalog Get-CisCommand Get-CisService Get-CloudCommand Get-Cluster Get-CompatibleVersionAddtionaPropertiesStr Get-ComplexResourceQualifier Get-ConfigurationErrorCount Get-ContentLibraryItem Get-CustomAttribute Get-DSCResourceModules Get-Datacenter Get-Datastore Get-DatastoreCluster Get-DrsClusterGroup Get-DrsRecommendation Get-DrsRule Get-DrsVMHostRule Get-DscResource Get-EdgeGateway Get-EncryptedPassword Get-ErrorReport Get-EsxCli Get-EsxTop Get-ExternalNetwork Get-FileHash Get-FloppyDrive Get-Folder Get-HAPrimaryVMHost Get-HCXAppliance Get-HCXApplianceCompute Get-HCXApplianceDVS Get-HCXApplianceDatastore Get-HCXApplianceNetwork Get-HCXContainer Get-HCXDatastore Get-HCXGateway Get-HCXInterconnectStatus Get-HCXJob Get-HCXMigration Get-HCXNetwork Get-HCXNetworkExtension Get-HCXReplication Get-HCXReplicationSnapshot Get-HCXService Get-HCXSite Get-HCXSitePairing Get-HCXVM Get-HardDisk Get-IScsiHbaTarget Get-InnerMostErrorRecord Get-InstallPath Get-InstalledModule Get-InstalledScript Get-Inventory Get-ItemPropertyValue Get-KeyManagementServer Get-KmipClientCertificate Get-KmsCluster Get-Log Get-LogType Get-MarkdownOption Get-Media Get-MofInstanceName Get-MofInstanceText Get-NetworkAdapter Get-NetworkPool Get-NfsUser Get-NicTeamingPolicy Get-NsxApplicableMember Get-NsxApplicableSecurityAction Get-NsxBackingDVSwitch Get-NsxBackingPortGroup Get-NsxCliDfwAddrSet Get-NsxCliDfwFilter Get-NsxCliDfwRule Get-NsxClusterStatus Get-NsxController Get-NsxDynamicCriteria Get-NsxDynamicMemberSet Get-NsxEdge Get-NsxEdgeBgp Get-NsxEdgeBgpNeighbour Get-NsxEdgeCertificate Get-NsxEdgeCsr Get-NsxEdgeFirewall Get-NsxEdgeFirewallRule Get-NsxEdgeInterface Get-NsxEdgeInterfaceAddress Get-NsxEdgeNat Get-NsxEdgeNatRule Get-NsxEdgeOspf Get-NsxEdgeOspfArea Get-NsxEdgeOspfInterface Get-NsxEdgePrefix Get-NsxEdgeRedistributionRule Get-NsxEdgeRouting Get-NsxEdgeStaticRoute Get-NsxEdgeSubInterface Get-NsxFirewallExclusionListMember Get-NsxFirewallGlobalConfiguration Get-NsxFirewallPublishStatus Get-NsxFirewallRule Get-NsxFirewallRuleMember Get-NsxFirewallSavedConfiguration Get-NsxFirewallSection Get-NsxFirewallThreshold Get-NsxIpPool Get-NsxIpSet Get-NsxLicense Get-NsxLoadBalancer Get-NsxLoadBalancerApplicationProfile Get-NsxLoadBalancerApplicationRule Get-NsxLoadBalancerMonitor Get-NsxLoadBalancerPool Get-NsxLoadBalancerPoolMember Get-NsxLoadBalancerStats Get-NsxLoadBalancerVip Get-NsxLogicalRouter Get-NsxLogicalRouterBgp Get-NsxLogicalRouterBgpNeighbour Get-NsxLogicalRouterBridge Get-NsxLogicalRouterBridging Get-NsxLogicalRouterInterface Get-NsxLogicalRouterOspf Get-NsxLogicalRouterOspfArea Get-NsxLogicalRouterOspfInterface Get-NsxLogicalRouterPrefix Get-NsxLogicalRouterRedistributionRule Get-NsxLogicalRouterRouting Get-NsxLogicalRouterStaticRoute Get-NsxLogicalSwitch Get-NsxMacSet Get-NsxManagerBackup Get-NsxManagerCertificate Get-NsxManagerComponentSummary Get-NsxManagerNetwork Get-NsxManagerRole Get-NsxManagerSsoConfig Get-NsxManagerSyncStatus Get-NsxManagerSyslogServer Get-NsxManagerSystemSummary Get-NsxManagerTimeSettings Get-NsxManagerVcenterConfig Get-NsxSecondaryManager Get-NsxSecurityGroup Get-NsxSecurityGroupEffectiveIpAddress Get-NsxSecurityGroupEffectiveMacAddress Get-NsxSecurityGroupEffectiveMember Get-NsxSecurityGroupEffectiveVirtualMachine Get-NsxSecurityGroupEffectiveVnic Get-NsxSecurityGroupMemberTypes Get-NsxSecurityPolicy Get-NsxSecurityPolicyHighestUsedPrecedence Get-NsxSecurityPolicyRule Get-NsxSecurityTag Get-NsxSecurityTagAssignment Get-NsxSegmentIdRange Get-NsxService Get-NsxServiceDefinition Get-NsxServiceGroup Get-NsxServiceGroupMember Get-NsxServiceProfile Get-NsxSpoofguardNic Get-NsxSpoofguardPolicy Get-NsxSslVpn Get-NsxSslVpnAuthServer Get-NsxSslVpnClientInstallationPackage Get-NsxSslVpnIpPool Get-NsxSslVpnPrivateNetwork Get-NsxSslVpnUser Get-NsxTransportZone Get-NsxUserRole Get-NsxVdsContext Get-NsxtPolicyService Get-NsxtService Get-OSCustomizationNicMapping Get-OSCustomizationSpec Get-Org Get-OrgNetwork Get-OrgVdc Get-OrgVdcNetwork Get-OvfConfiguration Get-PSCurrentConfigurationNode Get-PSDefaultConfigurationDocument Get-PSMetaConfigDocumentInstVersionInfo Get-PSMetaConfigurationProcessed Get-PSReadLineKeyHandler Get-PSReadLineOption Get-PSRepository Get-PSTopConfigurationName Get-PSVersion Get-Package Get-PackageProvider Get-PackageSource Get-PassthroughDevice Get-PositionInfo Get-PowerCLICommunity Get-PowerCLIConfiguration Get-PowerCLIHelp Get-PowerCLIVersion Get-PowerNsxVersion Get-ProviderVdc Get-PublicKeyFromFile Get-PublicKeyFromStore Get-ResourcePool Get-Runspace Get-RunspaceDebug Get-ScsiController Get-ScsiLun Get-ScsiLunPath Get-SecurityInfo Get-SecurityPolicy Get-Snapshot Get-SpbmCapability Get-SpbmCompatibleStorage Get-SpbmEntityConfiguration Get-SpbmFaultDomain Get-SpbmPointInTimeReplica Get-SpbmReplicationGroup Get-SpbmReplicationPair Get-SpbmStoragePolicy Get-Stat Get-StatInterval Get-StatType Get-Tag Get-TagAssignment Get-TagCategory Get-Task Get-Template Get-TimeZone Get-Uptime Get-UsbDevice Get-VAIOFilter Get-VApp Get-VDBlockedPolicy Get-VDPort Get-VDPortgroup Get-VDPortgroupOverridePolicy Get-VDSecurityPolicy Get-VDSwitch Get-VDSwitchPrivateVlan Get-VDTrafficShapingPolicy Get-VDUplinkLacpPolicy Get-VDUplinkTeamingPolicy Get-VDisk Get-VIAccount Get-VICommand Get-VICredentialStoreItem Get-VIEvent Get-VIObjectByVIView Get-VIPermission Get-VIPrivilege Get-VIProperty Get-VIRole Get-VM Get-VMGuest Get-VMHost Get-VMHostAccount Get-VMHostAdvancedConfiguration Get-VMHostAuthentication Get-VMHostAvailableTimeZone Get-VMHostDiagnosticPartition Get-VMHostDisk Get-VMHostDiskPartition Get-VMHostFirewallDefaultPolicy Get-VMHostFirewallException Get-VMHostFirmware Get-VMHostHardware Get-VMHostHba Get-VMHostModule Get-VMHostNetwork Get-VMHostNetworkAdapter Get-VMHostNtpServer Get-VMHostPatch Get-VMHostPciDevice Get-VMHostProfile Get-VMHostProfileImageCacheConfiguration Get-VMHostProfileRequiredInput Get-VMHostProfileStorageDeviceConfiguration Get-VMHostProfileUserConfiguration Get-VMHostProfileVmPortGroupConfiguration Get-VMHostRoute Get-VMHostService Get-VMHostSnmp Get-VMHostStartPolicy Get-VMHostStorage Get-VMHostSysLogServer Get-VMQuestion Get-VMResourceConfiguration Get-VMStartPolicy Get-VTpm Get-VTpmCSR Get-VTpmCertificate Get-VasaProvider Get-VasaStorageArray Get-View Get-VirtualPortGroup Get-VirtualSwitch Get-VmcSddcNetworkService Get-VmcService Get-VsanClusterConfiguration Get-VsanComponent Get-VsanDisk Get-VsanDiskGroup Get-VsanEvacuationPlan Get-VsanFaultDomain Get-VsanIscsiInitiatorGroup Get-VsanIscsiInitiatorGroupTargetAssociation Get-VsanIscsiLun Get-VsanIscsiTarget Get-VsanObject Get-VsanResyncingComponent Get-VsanRuntimeInfo Get-VsanSpaceUsage Get-VsanStat Get-VsanView Get-vRAApplianceServiceStatus Get-vRAAuthorizationRole Get-vRABlueprint Get-vRABusinessGroup Get-vRACatalogItem Get-vRACatalogItemRequestTemplate Get-vRACatalogPrincipal Get-vRAComponentRegistryService Get-vRAComponentRegistryServiceEndpoint Get-vRAComponentRegistryServiceStatus Get-vRAContent Get-vRAContentData Get-vRAContentType Get-vRACustomForm Get-vRAEntitledCatalogItem Get-vRAEntitledService Get-vRAEntitlement Get-vRAExternalNetworkProfile Get-vRAGroupPrincipal Get-vRAIcon Get-vRANATNetworkProfile Get-vRANetworkProfileIPAddressList Get-vRANetworkProfileIPRangeSummary Get-vRAPackage Get-vRAPackageContent Get-vRAPropertyDefinition Get-vRAPropertyGroup Get-vRARequest Get-vRARequestDetail Get-vRAReservation Get-vRAReservationComputeResource Get-vRAReservationComputeResourceMemory Get-vRAReservationComputeResourceNetwork Get-vRAReservationComputeResourceResourcePool Get-vRAReservationComputeResourceStorage Get-vRAReservationPolicy Get-vRAReservationTemplate Get-vRAReservationType Get-vRAResource Get-vRAResourceAction Get-vRAResourceActionRequestTemplate Get-vRAResourceMetric Get-vRAResourceOperation Get-vRAResourceType Get-vRARoutedNetworkProfile Get-vRAService Get-vRAServiceBlueprint Get-vRASourceMachine Get-vRAStorageReservationPolicy Get-vRATenant Get-vRATenantDirectory Get-vRATenantDirectoryStatus Get-vRATenantRole Get-vRAUserPrincipal Get-vRAUserPrincipalGroupMembership Get-vRAVersion Get-vRNIAPIVersion Get-vRNIApplication Get-vRNIApplicationTier Get-vRNIDataSource Get-vRNIDataSourceSNMPConfig Get-vRNIDatastore Get-vRNIDistributedSwitch Get-vRNIDistributedSwitchPortGroup Get-vRNIEntity Get-vRNIEntityName Get-vRNIFirewallRule Get-vRNIFlow Get-vRNIHost Get-vRNIHostVMKNic Get-vRNIIPSet Get-vRNIL2Network Get-vRNINSXManager Get-vRNINodes Get-vRNIProblem Get-vRNIRecommendedRules Get-vRNIRecommendedRulesNsxBundle Get-vRNISecurityGroup Get-vRNISecurityTag Get-vRNIService Get-vRNIServiceGroup Get-vRNIVM Get-vRNIVMvNIC Get-vRNIvCenter Get-vRNIvCenterCluster Get-vRNIvCenterDatacenter Get-vRNIvCenterFolder Grant-NsxSpoofguardNicApproval Import-CIVApp Import-CIVAppTemplate Import-NsxObject Import-PackageProvider Import-PowerShellDataFile Import-SpbmStoragePolicy Import-VApp Import-VMHostProfile Import-vRAContentData Import-vRAIcon Import-vRAPackage Initialize-ConfigurationRuntimeState Install-Module Install-NsxCluster Install-Package Install-PackageProvider Install-Script Install-VMHostPatch Invoke-DrsRecommendation Invoke-NsxCli Invoke-NsxClusterResolveAll Invoke-NsxManagerSync Invoke-NsxRestMethod Invoke-NsxWebRequest Invoke-VMHostProfile Invoke-VMScript Invoke-XpathQuery Invoke-vRADataCollection Invoke-vRARestMethod Invoke-vRATenantDirectorySync Invoke-vRNIRestMethod Join-String Mount-Tools Move-Cluster Move-Datacenter Move-Datastore Move-Folder Move-HardDisk Move-Inventory Move-NsxSecurityPolicyRule Move-ResourcePool Move-Template Move-VApp Move-VDisk Move-VM Move-VMHost New-AdvancedSetting New-AlarmAction New-AlarmActionTrigger New-CDDrive New-CIAccessControlRule New-CIVApp New-CIVAppNetwork New-CIVAppTemplate New-CIVM New-Cluster New-CustomAttribute New-Datacenter New-Datastore New-DatastoreCluster New-DatastoreDrive New-DrsClusterGroup New-DrsRule New-DrsVMHostRule New-DscChecksum New-FloppyDrive New-Folder New-Guid New-HCXAppliance New-HCXMigration New-HCXNetworkExtension New-HCXNetworkMapping New-HCXReplication New-HCXSitePairing New-HCXStaticRoute New-HardDisk New-IScsiHbaTarget New-KmipClientCertificate New-NetworkAdapter New-NfsUser New-NsxAddressSpec New-NsxClusterVxlanConfig New-NsxController New-NsxDynamicCriteriaSpec New-NsxEdge New-NsxEdgeBgpNeighbour New-NsxEdgeCsr New-NsxEdgeFirewallRule New-NsxEdgeInterfaceSpec New-NsxEdgeNatRule New-NsxEdgeOspfArea New-NsxEdgeOspfInterface New-NsxEdgePrefix New-NsxEdgeRedistributionRule New-NsxEdgeSelfSignedCertificate New-NsxEdgeStaticRoute New-NsxEdgeSubInterface New-NsxEdgeSubInterfaceSpec New-NsxFirewallRule New-NsxFirewallSavedConfiguration New-NsxFirewallSection New-NsxIpPool New-NsxIpSet New-NsxLoadBalancerApplicationProfile New-NsxLoadBalancerApplicationRule New-NsxLoadBalancerMemberSpec New-NsxLoadBalancerMonitor New-NsxLoadBalancerPool New-NsxLogicalRouter New-NsxLogicalRouterBgpNeighbour New-NsxLogicalRouterBridge New-NsxLogicalRouterInterface New-NsxLogicalRouterInterfaceSpec New-NsxLogicalRouterOspfArea New-NsxLogicalRouterOspfInterface New-NsxLogicalRouterPrefix New-NsxLogicalRouterRedistributionRule New-NsxLogicalRouterStaticRoute New-NsxLogicalSwitch New-NsxMacSet New-NsxManager New-NsxSecurityGroup New-NsxSecurityPolicy New-NsxSecurityPolicyAssignment New-NsxSecurityPolicyFirewallRuleSpec New-NsxSecurityPolicyGuestIntrospectionSpec New-NsxSecurityPolicyNetworkIntrospectionSpec New-NsxSecurityTag New-NsxSecurityTagAssignment New-NsxSegmentIdRange New-NsxService New-NsxServiceGroup New-NsxSpoofguardPolicy New-NsxSslVpnAuthServer New-NsxSslVpnClientInstallationPackage New-NsxSslVpnIpPool New-NsxSslVpnPrivateNetwork New-NsxSslVpnUser New-NsxTransportZone New-NsxVdsContext New-OSCustomizationNicMapping New-OSCustomizationSpec New-Org New-OrgNetwork New-OrgVdc New-OrgVdcNetwork New-ResourcePool New-ScriptFileInfo New-ScsiController New-Snapshot New-SpbmRule New-SpbmRuleSet New-SpbmStoragePolicy New-StatInterval New-Tag New-TagAssignment New-TagCategory New-Template New-TemporaryFile New-VAIOFilter New-VApp New-VDPortgroup New-VDSwitch New-VDSwitchPrivateVlan New-VDisk New-VICredentialStoreItem New-VIInventoryDrive New-VIPermission New-VIProperty New-VIRole New-VISamlSecurityContext New-VM New-VMHostAccount New-VMHostNetworkAdapter New-VMHostProfile New-VMHostProfileVmPortGroupConfiguration New-VMHostRoute New-VTpm New-VasaProvider New-VcsOAuthSecurityContext New-VirtualPortGroup New-VirtualSwitch New-VsanDisk New-VsanDiskGroup New-VsanFaultDomain New-VsanIscsiInitiatorGroup New-VsanIscsiInitiatorGroupTargetAssociation New-VsanIscsiLun New-VsanIscsiTarget New-vRABusinessGroup New-vRAEntitlement New-vRAExternalNetworkProfile New-vRAGroupPrincipal New-vRANATNetworkProfile New-vRANetworkProfileIPRangeDefinition New-vRAPackage New-vRAPropertyDefinition New-vRAPropertyGroup New-vRAReservation New-vRAReservationNetworkDefinition New-vRAReservationPolicy New-vRAReservationStorageDefinition New-vRARoutedNetworkProfile New-vRAService New-vRAStorageReservationPolicy New-vRATenant New-vRATenantDirectory New-vRAUserPrincipal New-vRNIApplication New-vRNIApplicationTier New-vRNIDataSource Open-VMConsoleWindow Publish-Module Publish-NsxSpoofguardPolicy Publish-Script Register-PSRepository Register-PackageSource Remove-AdvancedSetting Remove-AlarmAction Remove-AlarmActionTrigger Remove-Alias Remove-CDDrive Remove-CIAccessControlRule Remove-CIVApp Remove-CIVAppNetwork Remove-CIVAppTemplate Remove-Cluster Remove-CustomAttribute Remove-Datacenter Remove-Datastore Remove-DatastoreCluster Remove-DrsClusterGroup Remove-DrsRule Remove-DrsVMHostRule Remove-FloppyDrive Remove-Folder Remove-HCXAppliance Remove-HCXNetworkExtension Remove-HCXReplication Remove-HCXSitePairing Remove-HardDisk Remove-IScsiHbaTarget Remove-Inventory Remove-KeyManagementServer Remove-NetworkAdapter Remove-NfsUser Remove-NsxCluster Remove-NsxClusterVxlanConfig Remove-NsxController Remove-NsxDynamicCriteria Remove-NsxDynamicMemberSet Remove-NsxEdge Remove-NsxEdgeBgpNeighbour Remove-NsxEdgeCertificate Remove-NsxEdgeCsr Remove-NsxEdgeFirewallRule Remove-NsxEdgeInterfaceAddress Remove-NsxEdgeNatRule Remove-NsxEdgeOspfArea Remove-NsxEdgeOspfInterface Remove-NsxEdgePrefix Remove-NsxEdgeRedistributionRule Remove-NsxEdgeStaticRoute Remove-NsxEdgeSubInterface Remove-NsxFirewallExclusionListMember Remove-NsxFirewallRule Remove-NsxFirewallRuleMember Remove-NsxFirewallSavedConfiguration Remove-NsxFirewallSection Remove-NsxIpPool Remove-NsxIpSet Remove-NsxIpSetMember Remove-NsxLoadBalancerApplicationProfile Remove-NsxLoadBalancerMonitor Remove-NsxLoadBalancerPool Remove-NsxLoadBalancerPoolMember Remove-NsxLoadBalancerVip Remove-NsxLogicalRouter Remove-NsxLogicalRouterBgpNeighbour Remove-NsxLogicalRouterBridge Remove-NsxLogicalRouterInterface Remove-NsxLogicalRouterOspfArea Remove-NsxLogicalRouterOspfInterface Remove-NsxLogicalRouterPrefix Remove-NsxLogicalRouterRedistributionRule Remove-NsxLogicalRouterStaticRoute Remove-NsxLogicalSwitch Remove-NsxMacSet Remove-NsxSecondaryManager Remove-NsxSecurityGroup Remove-NsxSecurityGroupMember Remove-NsxSecurityPolicy Remove-NsxSecurityPolicyAssignment Remove-NsxSecurityPolicyRule Remove-NsxSecurityPolicyRuleGroup Remove-NsxSecurityPolicyRuleService Remove-NsxSecurityTag Remove-NsxSecurityTagAssignment Remove-NsxSegmentIdRange Remove-NsxService Remove-NsxServiceGroup Remove-NsxSpoofguardPolicy Remove-NsxSslVpnClientInstallationPackage Remove-NsxSslVpnIpPool Remove-NsxSslVpnPrivateNetwork Remove-NsxSslVpnUser Remove-NsxTransportZone Remove-NsxTransportZoneMember Remove-NsxVdsContext Remove-OSCustomizationNicMapping Remove-OSCustomizationSpec Remove-Org Remove-OrgNetwork Remove-OrgVdc Remove-OrgVdcNetwork Remove-PSReadLineKeyHandler Remove-PassthroughDevice Remove-ResourcePool Remove-Snapshot Remove-SpbmStoragePolicy Remove-StatInterval Remove-Tag Remove-TagAssignment Remove-TagCategory Remove-Template Remove-UsbDevice Remove-VAIOFilter Remove-VApp Remove-VDPortGroup Remove-VDSwitch Remove-VDSwitchPhysicalNetworkAdapter Remove-VDSwitchPrivateVlan Remove-VDSwitchVMHost Remove-VDisk Remove-VICredentialStoreItem Remove-VIPermission Remove-VIProperty Remove-VIRole Remove-VM Remove-VMHost Remove-VMHostAccount Remove-VMHostNetworkAdapter Remove-VMHostNtpServer Remove-VMHostProfile Remove-VMHostProfileVmPortGroupConfiguration Remove-VMHostRoute Remove-VTpm Remove-VasaProvider Remove-VirtualPortGroup Remove-VirtualSwitch Remove-VirtualSwitchPhysicalNetworkAdapter Remove-VsanDisk Remove-VsanDiskGroup Remove-VsanFaultDomain Remove-VsanIscsiInitiatorGroup Remove-VsanIscsiInitiatorGroupTargetAssociation Remove-VsanIscsiLun Remove-VsanIscsiTarget Remove-vRABusinessGroup Remove-vRACustomForm Remove-vRAExternalNetworkProfile Remove-vRAGroupPrincipal Remove-vRAIcon Remove-vRANATNetworkProfile Remove-vRAPackage Remove-vRAPrincipalFromTenantRole Remove-vRAPropertyDefinition Remove-vRAPropertyGroup Remove-vRAReservation Remove-vRAReservationNetwork Remove-vRAReservationPolicy Remove-vRAReservationStorage Remove-vRARoutedNetworkProfile Remove-vRAService Remove-vRAStorageReservationPolicy Remove-vRATenant Remove-vRATenantDirectory Remove-vRAUserPrincipal Remove-vRNIApplication Remove-vRNIApplicationTier Remove-vRNIDataSource Repair-NsxEdge Repair-VsanObject Request-vRACatalogItem Request-vRAResourceAction Restart-CIVApp Restart-CIVAppGuest Restart-CIVM Restart-CIVMGuest Restart-VM Restart-VMGuest Restart-VMHost Restart-VMHostService Resume-HCXReplication Revoke-NsxSpoofguardNicApproval Save-Module Save-Package Save-Script Search-Cloud Set-AdvancedSetting Set-AlarmDefinition Set-Annotation Set-CDDrive Set-CIAccessControlRule Set-CINetworkAdapter Set-CIVApp Set-CIVAppNetwork Set-CIVAppStartRule Set-CIVAppTemplate Set-Cluster Set-CustomAttribute Set-Datacenter Set-Datastore Set-DatastoreCluster Set-DrsClusterGroup Set-DrsRule Set-DrsVMHostRule Set-FloppyDrive Set-Folder Set-HCXAppliance Set-HCXMigration Set-HCXReplication Set-HardDisk Set-IScsiHbaTarget Set-KeyManagementServer Set-KmsCluster Set-MarkdownOption Set-NetworkAdapter Set-NfsUser Set-NicTeamingPolicy Set-NodeExclusiveResources Set-NodeManager Set-NodeResourceSource Set-NodeResources Set-NsxEdge Set-NsxEdgeBgp Set-NsxEdgeFirewall Set-NsxEdgeInterface Set-NsxEdgeNat Set-NsxEdgeOspf Set-NsxEdgeRouting Set-NsxFirewallGlobalConfiguration Set-NsxFirewallRule Set-NsxFirewallSavedConfiguration Set-NsxFirewallThreshold Set-NsxLoadBalancer Set-NsxLoadBalancerPoolMember Set-NsxLogicalRouter Set-NsxLogicalRouterBgp Set-NsxLogicalRouterBridging Set-NsxLogicalRouterInterface Set-NsxLogicalRouterOspf Set-NsxLogicalRouterRouting Set-NsxManager Set-NsxManagerRole Set-NsxManagerTimeSettings Set-NsxSecurityPolicy Set-NsxSecurityPolicyFirewallRule Set-NsxSslVpn Set-OSCustomizationNicMapping Set-OSCustomizationSpec Set-Org Set-OrgNetwork Set-OrgVdc Set-OrgVdcNetwork Set-PSCurrentConfigurationNode Set-PSDefaultConfigurationDocument Set-PSMetaConfigDocInsProcessedBeforeMeta Set-PSMetaConfigVersionInfoV2 Set-PSReadLineKeyHandler Set-PSReadLineOption Set-PSRepository Set-PSTopConfigurationName Set-PackageSource Set-PowerCLIConfiguration Set-ResourcePool Set-ScsiController Set-ScsiLun Set-ScsiLunPath Set-SecurityPolicy Set-Snapshot Set-SpbmEntityConfiguration Set-SpbmStoragePolicy Set-StatInterval Set-Tag Set-TagCategory Set-Template Set-VAIOFilter Set-VApp Set-VDBlockedPolicy Set-VDPort Set-VDPortgroup Set-VDPortgroupOverridePolicy Set-VDSecurityPolicy Set-VDSwitch Set-VDTrafficShapingPolicy Set-VDUplinkLacpPolicy Set-VDUplinkTeamingPolicy Set-VDVlanConfiguration Set-VDisk Set-VIPermission Set-VIRole Set-VM Set-VMHost Set-VMHostAccount Set-VMHostAdvancedConfiguration Set-VMHostAuthentication Set-VMHostDiagnosticPartition Set-VMHostFirewallDefaultPolicy Set-VMHostFirewallException Set-VMHostFirmware Set-VMHostHba Set-VMHostModule Set-VMHostNetwork Set-VMHostNetworkAdapter Set-VMHostProfile Set-VMHostProfileImageCacheConfiguration Set-VMHostProfileStorageDeviceConfiguration Set-VMHostProfileUserConfiguration Set-VMHostProfileVmPortGroupConfiguration Set-VMHostRoute Set-VMHostService Set-VMHostSnmp Set-VMHostStartPolicy Set-VMHostStorage Set-VMHostSysLogServer Set-VMQuestion Set-VMResourceConfiguration Set-VMStartPolicy Set-VTpm Set-VirtualPortGroup Set-VirtualSwitch Set-VsanClusterConfiguration Set-VsanFaultDomain Set-VsanIscsiInitiatorGroup Set-VsanIscsiLun Set-VsanIscsiTarget Set-vRABusinessGroup Set-vRACatalogItem Set-vRACustomForm Set-vRAEntitlement Set-vRAExternalNetworkProfile Set-vRANATNetworkProfile Set-vRAReservation Set-vRAReservationNetwork Set-vRAReservationPolicy Set-vRAReservationStorage Set-vRARoutedNetworkProfile Set-vRAService Set-vRAStorageReservationPolicy Set-vRATenant Set-vRATenantDirectory Set-vRAUserPrincipal Set-vRNIDataSourceSNMPConfig Show-Markdown Start-CIVApp Start-CIVM Start-HCXMigration Start-HCXReplication Start-SpbmReplicationFailover Start-SpbmReplicationPrepareFailover Start-SpbmReplicationPromote Start-SpbmReplicationReverse Start-SpbmReplicationTestFailover Start-ThreadJob Start-VApp Start-VM Start-VMHost Start-VMHostService Start-VsanClusterDiskUpdate Start-VsanClusterRebalance Start-VsanEncryptionConfiguration Stop-CIVApp Stop-CIVAppGuest Stop-CIVM Stop-CIVMGuest Stop-SpbmReplicationTestFailover Stop-Task Stop-VApp Stop-VM Stop-VMGuest Stop-VMHost Stop-VMHostService Stop-VsanClusterRebalance Suspend-CIVApp Suspend-CIVM Suspend-HCXReplication Suspend-VM Suspend-VMGuest Suspend-VMHost Sync-SpbmReplicationGroup Test-ConflictingResources Test-HCXMigration Test-HCXReplication Test-Json Test-ModuleReloadRequired Test-MofInstanceText Test-NodeManager Test-NodeResourceSource Test-NodeResources Test-ScriptFileInfo Test-VMHostProfileCompliance Test-VMHostSnmp Test-VsanClusterHealth Test-VsanNetworkPerformance Test-VsanStoragePerformance Test-VsanVMCreation Test-vRAPackage Uninstall-Module Uninstall-Package Uninstall-Script Unlock-VM Unregister-PSRepository Unregister-PackageSource Update-ConfigurationDocumentRef Update-ConfigurationErrorCount Update-DependsOn Update-LocalConfigManager Update-Module Update-ModuleManifest Update-ModuleVersion Update-PowerNsx Update-Script Update-ScriptFileInfo Update-Tools Update-VsanHclDatabase ValidateUpdate-ConfigurationData Wait-Debugger Wait-NsxControllerJob Wait-NsxGenericJob Wait-NsxJob Wait-Task Wait-Tools Write-Information Write-Log Write-MetaConfigFile Write-NodeMOFFile",
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@@ -413,12 +413,13 @@
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addMagazineGlobal addMagazinePool addMagazines addMagazineTurret addMenu addMenuItem addMissionEventHandler addMPEventHandler addMusicEventHandler addOwnedMine addPlayerScores addPrimaryWeaponItem addPublicVariableEventHandler addRating addResources addScore addScoreSide addSecondaryWeaponItem addSwitchableUnit addTeamMember addToRemainsCollector addTorque addUniform addVehicle addVest addWaypoint addWeapon addWeaponCargo addWeaponCargoGlobal addWeaponGlobal addWeaponItem addWeaponPool addWeaponTurret admin agent agents AGLToASL aimedAtTarget aimPos airDensityRTD airplaneThrottle airportSide AISFinishHeal alive all3DENEntities allAirports allControls allCurators allCutLayers allDead allDeadMen allDisplays allGroups allMapMarkers allMines allMissionObjects allow3DMode allowCrewInImmobile allowCuratorLogicIgnoreAreas allowDamage allowDammage allowFileOperations allowFleeing allowGetIn allowSprint allPlayers allSimpleObjects allSites allTurrets allUnits allUnitsUAV allVariables ammo ammoOnPylon and animate animateBay animateDoor animatePylon animateSource animationNames animationPhase animationSourcePhase animationState append apply armoryPoints arrayIntersect asin ASLToAGL ASLToATL assert assignAsCargo assignAsCargoIndex assignAsCommander assignAsDriver assignAsGunner assignAsTurret assignCurator assignedCargo assignedCommander assignedDriver assignedGunner assignedItems assignedTarget assignedTeam assignedVehicle assignedVehicleRole assignItem assignTeam assignToAirport atan atan2 atg ATLToASL attachedObject attachedObjects attachedTo attachObject attachTo attackEnabled backpack backpackCargo backpackContainer backpackItems backpackMagazines backpackSpaceFor behaviour benchmark binocular boundingBox boundingBoxReal boundingCenter breakOut breakTo briefingName buildingExit buildingPos buttonAction buttonSetAction cadetMode call callExtension camCommand camCommit camCommitPrepared camCommitted camConstuctionSetParams camCreate camDestroy cameraEffect cameraEffectEnableHUD cameraInterest cameraOn cameraView campaignConfigFile camPreload camPreloaded camPrepareBank camPrepareDir camPrepareDive camPrepareFocus camPrepareFov camPrepareFovRange camPreparePos camPrepareRelPos camPrepareTarget camSetBank camSetDir camSetDive camSetFocus camSetFov camSetFovRange camSetPos camSetRelPos camSetTarget camTarget camUseNVG canAdd canAddItemToBackpack canAddItemToUniform canAddItemToVest cancelSimpleTaskDestination canFire canMove canSlingLoad canStand canSuspend canTriggerDynamicSimulation canUnloadInCombat canVehicleCargo captive captiveNum cbChecked cbSetChecked ceil channelEnabled cheatsEnabled checkAIFeature checkVisibility className clearAllItemsFromBackpack clearBackpackCargo clearBackpackCargoGlobal clearGroupIcons clearItemCargo clearItemCargoGlobal clearItemPool clearMagazineCargo clearMagazineCargoGlobal clearMagazinePool clearOverlay clearRadio clearWeaponCargo clearWeaponCargoGlobal clearWeaponPool clientOwner closeDialog closeDisplay closeOverlay collapseObjectTree collect3DENHistory collectiveRTD combatMode commandArtilleryFire commandChat commander commandFire commandFollow commandFSM commandGetOut commandingMenu commandMove commandRadio commandStop commandSuppressiveFire commandTarget commandWatch comment commitOverlay compile compileFinal completedFSM composeText configClasses configFile configHierarchy configName configProperties configSourceAddonList configSourceMod configSourceModList confirmSensorTarget connectTerminalToUAV controlsGroupCtrl copyFromClipboard copyToClipboard copyWaypoints cos count countEnemy countFriendly countSide countType countUnknown create3DENComposition create3DENEntity createAgent createCenter createDialog createDiaryLink createDiaryRecord createDiarySubject createDisplay createGearDialog createGroup createGuardedPoint createLocation createMarker createMarkerLocal createMenu createMine createMissionDisplay createMPCampaignDisplay createSimpleObject createSimpleTask createSite createSoundSource createTask createTeam createTrigger createUnit createVehicle createVehicleCrew createVehicleLocal crew ctAddHeader ctAddRow ctClear ctCurSel ctData ctFindHeaderRows ctFindRowHeader ctHeaderControls ctHeaderCount ctRemoveHeaders ctRemoveRows ctrlActivate ctrlAddEventHandler ctrlAngle ctrlAutoScrollDelay ctrlAutoScrollRewind ctrlAutoScrollSpeed ctrlChecked ctrlClassName ctrlCommit ctrlCommitted ctrlCreate ctrlDelete ctrlEnable ctrlEnabled ctrlFade ctrlHTMLLoaded ctrlIDC ctrlIDD ctrlMapAnimAdd ctrlMapAnimClear ctrlMapAnimCommit ctrlMapAnimDone ctrlMapCursor ctrlMapMouseOver ctrlMapScale ctrlMapScreenToWorld ctrlMapWorldToScreen ctrlModel ctrlModelDirAndUp ctrlModelScale ctrlParent ctrlParentControlsGroup ctrlPosition ctrlRemoveAllEventHandlers ctrlRemoveEventHandler ctrlScale ctrlSetActiveColor ctrlSetAngle ctrlSetAutoScrollDelay ctrlSetAutoScrollRewind ctrlSetAutoScrollSpeed ctrlSetBackgroundColor ctrlSetChecked ctrlSetEventHandler ctrlSetFade ctrlSetFocus ctrlSetFont ctrlSetFontH1 ctrlSetFontH1B ctrlSetFontH2 ctrlSetFontH2B ctrlSetFontH3 ctrlSetFontH3B ctrlSetFontH4 ctrlSetFontH4B ctrlSetFontH5 ctrlSetFontH5B ctrlSetFontH6 ctrlSetFontH6B ctrlSetFontHeight ctrlSetFontHeightH1 ctrlSetFontHeightH2 ctrlSetFontHeightH3 ctrlSetFontHeightH4 ctrlSetFontHeightH5 ctrlSetFontHeightH6 ctrlSetFontHeightSecondary ctrlSetFontP ctrlSetFontPB ctrlSetFontSecondary ctrlSetForegroundColor ctrlSetModel ctrlSetModelDirAndUp ctrlSetModelScale ctrlSetPixelPrecision ctrlSetPosition ctrlSetScale ctrlSetStructuredText ctrlSetText ctrlSetTextColor ctrlSetTooltip ctrlSetTooltipColorBox ctrlSetTooltipColorShade ctrlSetTooltipColorText ctrlShow ctrlShown ctrlText ctrlTextHeight ctrlTextWidth ctrlType ctrlVisible ctRowControls ctRowCount ctSetCurSel ctSetData ctSetHeaderTemplate ctSetRowTemplate ctSetValue ctValue curatorAddons curatorCamera curatorCameraArea curatorCameraAreaCeiling curatorCoef curatorEditableObjects curatorEditingArea curatorEditingAreaType curatorMouseOver curatorPoints curatorRegisteredObjects curatorSelected curatorWaypointCost current3DENOperation currentChannel currentCommand currentMagazine currentMagazineDetail currentMagazineDetailTurret currentMagazineTurret currentMuzzle currentNamespace currentTask currentTasks currentThrowable currentVisionMode currentWaypoint currentWeapon currentWeaponMode currentWeaponTurret currentZeroing cursorObject cursorTarget customChat customRadio cutFadeOut cutObj cutRsc cutText damage date dateToNumber daytime deActivateKey debriefingText debugFSM debugLog deg delete3DENEntities deleteAt deleteCenter deleteCollection deleteEditorObject deleteGroup deleteGroupWhenEmpty deleteIdentity deleteLocation deleteMarker deleteMarkerLocal deleteRange deleteResources deleteSite deleteStatus deleteTeam deleteVehicle deleteVehicleCrew deleteWaypoint detach detectedMines diag_activeMissionFSMs diag_activeScripts diag_activeSQFScripts diag_activeSQSScripts diag_captureFrame diag_captureFrameToFile diag_captureSlowFrame diag_codePerformance diag_drawMode diag_enable diag_enabled diag_fps diag_fpsMin diag_frameNo diag_lightNewLoad diag_list diag_log diag_logSlowFrame diag_mergeConfigFile diag_recordTurretLimits diag_setLightNew diag_tickTime diag_toggle dialog diarySubjectExists didJIP didJIPOwner difficulty difficultyEnabled difficultyEnabledRTD difficultyOption direction directSay disableAI disableCollisionWith disableConversation disableDebriefingStats disableMapIndicators disableNVGEquipment disableRemoteSensors disableSerialization disableTIEquipment disableUAVConnectability disableUserInput displayAddEventHandler displayCtrl displayParent displayRemoveAllEventHandlers displayRemoveEventHandler displaySetEventHandler dissolveTeam distance distance2D distanceSqr distributionRegion do3DENAction doArtilleryFire doFire doFollow doFSM doGetOut doMove doorPhase doStop doSuppressiveFire doTarget doWatch drawArrow drawEllipse drawIcon drawIcon3D drawLine drawLine3D drawLink drawLocation drawPolygon drawRectangle drawTriangle driver drop dynamicSimulationDistance dynamicSimulationDistanceCoef dynamicSimulationEnabled dynamicSimulationSystemEnabled echo edit3DENMissionAttributes editObject editorSetEventHandler effectiveCommander emptyPositions enableAI enableAIFeature enableAimPrecision enableAttack enableAudioFeature enableAutoStartUpRTD enableAutoTrimRTD enableCamShake enableCaustics enableChannel enableCollisionWith enableCopilot enableDebriefingStats enableDiagLegend enableDynamicSimulation enableDynamicSimulationSystem enableEndDialog enableEngineArtillery enableEnvironment enableFatigue enableGunLights enableInfoPanelComponent enableIRLasers enableMimics enablePersonTurret enableRadio enableReload enableRopeAttach enableSatNormalOnDetail enableSaving enableSentences enableSimulation enableSimulationGlobal enableStamina enableTeamSwitch enableTraffic enableUAVConnectability enableUAVWaypoints enableVehicleCargo enableVehicleSensor enableWeaponDisassembly endLoadingScreen endMission engineOn enginesIsOnRTD enginesRpmRTD enginesTorqueRTD entities environmentEnabled estimatedEndServerTime estimatedTimeLeft evalObjectArgument everyBackpack everyContainer exec execEditorScript execFSM execVM exp expectedDestination exportJIPMessages eyeDirection eyePos face faction fadeMusic fadeRadio fadeSound fadeSpeech failMission fillWeaponsFromPool find findCover findDisplay findEditorObject findEmptyPosition findEmptyPositionReady findIf findNearestEnemy finishMissionInit finite fire fireAtTarget firstBackpack flag flagAnimationPhase flagOwner flagSide flagTexture fleeing floor flyInHeight flyInHeightASL fog fogForecast fogParams forceAddUniform forcedMap forceEnd forceFlagTexture forceFollowRoad forceMap forceRespawn forceSpeed forceWalk forceWeaponFire forceWeatherChange forEachMember forEachMemberAgent forEachMemberTeam forgetTarget format formation formationDirection formationLeader formationMembers formationPosition formationTask formatText formLeader freeLook fromEditor fuel fullCrew gearIDCAmmoCount gearSlotAmmoCount gearSlotData get3DENActionState get3DENAttribute get3DENCamera get3DENConnections get3DENEntity get3DENEntityID get3DENGrid get3DENIconsVisible get3DENLayerEntities get3DENLinesVisible get3DENMissionAttribute get3DENMouseOver get3DENSelected getAimingCoef getAllEnvSoundControllers getAllHitPointsDamage getAllOwnedMines getAllSoundControllers getAmmoCargo getAnimAimPrecision getAnimSpeedCoef getArray getArtilleryAmmo getArtilleryComputerSettings getArtilleryETA getAssignedCuratorLogic getAssignedCuratorUnit getBackpackCargo getBleedingRemaining getBurningValue getCameraViewDirection getCargoIndex getCenterOfMass getClientState getClientStateNumber getCompatiblePylonMagazines getConnectedUAV getContainerMaxLoad getCursorObjectParams getCustomAimCoef getDammage getDescription getDir getDirVisual getDLCAssetsUsage getDLCAssetsUsageByName getDLCs getEditorCamera getEditorMode getEditorObjectScope getElevationOffset getEnvSoundController getFatigue getForcedFlagTexture getFriend getFSMVariable getFuelCargo getGroupIcon getGroupIconParams getGroupIcons getHideFrom getHit getHitIndex getHitPointDamage getItemCargo getMagazineCargo getMarkerColor getMarkerPos getMarkerSize getMarkerType getMass getMissionConfig getMissionConfigValue getMissionDLCs getMissionLayerEntities getModelInfo getMousePosition getMusicPlayedTime getNumber getObjectArgument getObjectChildren getObjectDLC getObjectMaterials getObjectProxy getObjectTextures getObjectType getObjectViewDistance getOxygenRemaining getPersonUsedDLCs getPilotCameraDirection getPilotCameraPosition getPilotCameraRotation getPilotCameraTarget getPlateNumber getPlayerChannel getPlayerScores getPlayerUID getPos getPosASL getPosASLVisual getPosASLW getPosATL getPosATLVisual getPosVisual getPosWorld getPylonMagazines getRelDir getRelPos getRemoteSensorsDisabled getRepairCargo getResolution getShadowDistance 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infoPanel infoPanelComponentEnabled infoPanelComponents infoPanels inGameUISetEventHandler inheritsFrom initAmbientLife inPolygon inputAction inRangeOfArtillery insertEditorObject intersect is3DEN is3DENMultiplayer isAbleToBreathe isAgent isArray isAutoHoverOn isAutonomous isAutotest isBleeding isBurning isClass isCollisionLightOn isCopilotEnabled isDamageAllowed isDedicated isDLCAvailable isEngineOn isEqualTo isEqualType isEqualTypeAll isEqualTypeAny isEqualTypeArray isEqualTypeParams isFilePatchingEnabled isFlashlightOn isFlatEmpty isForcedWalk isFormationLeader isGroupDeletedWhenEmpty isHidden isInRemainsCollector isInstructorFigureEnabled isIRLaserOn isKeyActive isKindOf isLaserOn isLightOn isLocalized isManualFire isMarkedForCollection isMultiplayer isMultiplayerSolo isNil isNull isNumber isObjectHidden isObjectRTD isOnRoad isPipEnabled isPlayer isRealTime isRemoteExecuted isRemoteExecutedJIP isServer isShowing3DIcons isSimpleObject isSprintAllowed isStaminaEnabled isSteamMission 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diff --git a/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata.html b/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata.html
index 7c86143..87ac4fd7 100644
--- a/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata.html
+++ b/polygerrit-ui/app/elements/change/gr-change-metadata/gr-change-metadata.html
@@ -116,6 +116,7 @@
         margin-top: .5em;
         padding: .5em 0;
       }
+      .hashtag gr-linked-chip,
       .topic gr-linked-chip {
         --linked-chip-text-color: var(--link-color);
       }
diff --git a/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list_test.html b/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list_test.html
index cc3e937..3f95fd0 100644
--- a/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list_test.html
+++ b/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list_test.html
@@ -1411,7 +1411,7 @@
         theme: 'DEFAULT',
         ignore_whitespace: 'IGNORE_NONE',
       };
-      diff._diff = mock.diffResponse;
+      diff.diff = mock.diffResponse;
       diff.$.diff.flushDebouncer('renderDiffTable');
     };
 
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.html b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.html
index f29a5da..780301b 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.html
@@ -20,7 +20,6 @@
 <link rel="import" href="../gr-coverage-layer/gr-coverage-layer.html">
 <link rel="import" href="../gr-diff-processor/gr-diff-processor.html">
 <link rel="import" href="../gr-ranged-comment-layer/gr-ranged-comment-layer.html">
-<link rel="import" href="../gr-syntax-layer/gr-syntax-layer.html">
 
 <dom-module id="gr-diff-builder">
   <template>
@@ -30,9 +29,6 @@
     <gr-ranged-comment-layer
         id="rangeLayer"
         comment-ranges="[[commentRanges]]"></gr-ranged-comment-layer>
-    <gr-syntax-layer
-        id="syntaxLayer"
-        diff="[[diff]]"></gr-syntax-layer>
     <gr-coverage-layer
         id="coverageLayerLeft"
         coverage-ranges="[[_leftCoverageRanges]]"
@@ -64,13 +60,6 @@
         UNIFIED: 'UNIFIED_DIFF',
       };
 
-      // If any line of the diff is more than the character limit, then disable
-      // syntax highlighting for the entire file.
-      const SYNTAX_MAX_LINE_LENGTH = 500;
-
-      // Disable syntax highlighting if the overall diff is too large.
-      const SYNTAX_MAX_DIFF_LENGTH = 20000;
-
       const TRAILING_WHITESPACE_PATTERN = /\s+$/;
 
       Polymer({
@@ -84,18 +73,11 @@
          */
 
         /**
-         * Fired when the diff finishes rendering text content and starts
-         * syntax highlighting.
+         * Fired when the diff finishes rendering text content.
          *
          * @event render-content
          */
 
-        /**
-         * Fired when the diff finishes syntax highlighting.
-         *
-         * @event render-syntax
-         */
-
         properties: {
           diff: Object,
           diffPath: String,
@@ -138,7 +120,7 @@
            * @type {?Object}
            */
           _cancelableRenderPromise: Object,
-          pluginLayers: {
+          layers: {
             type: Array,
             value: [],
           },
@@ -171,11 +153,10 @@
           // attached before plugins are installed.
           this._setupAnnotationLayers();
 
-          this.$.syntaxLayer.enabled = prefs.syntax_highlighting;
           this._showTabs = !!prefs.show_tabs;
           this._showTrailingWhitespace = !!prefs.show_whitespace_errors;
 
-          // Stop the processor and syntax layer (if they're running).
+          // Stop the processor if it's running.
           this.cancel();
 
           this._builder = this._getDiffBuilder(this.diff, prefs);
@@ -198,16 +179,6 @@
                     }
                     this.dispatchEvent(new CustomEvent('render-content',
                         {bubbles: true, composed: true}));
-
-                    if (this._diffTooLargeForSyntax()) {
-                      this.$.syntaxLayer.enabled = false;
-                    }
-
-                    return this.$.syntaxLayer.process();
-                  })
-                  .then(() => {
-                    this.dispatchEvent(new CustomEvent(
-                        'render-syntax', {bubbles: true, composed: true}));
                   }));
           return this._cancelableRenderPromise
               .finally(() => { this._cancelableRenderPromise = null; })
@@ -220,7 +191,6 @@
         _setupAnnotationLayers() {
           const layers = [
             this._createTrailingWhitespaceLayer(),
-            this.$.syntaxLayer,
             this._createIntralineLayer(),
             this._createTabIndicatorLayer(),
             this.$.rangeLayer,
@@ -228,8 +198,8 @@
             this.$.coverageLayerRight,
           ];
 
-          if (this.pluginLayers) {
-            layers.push(...this.pluginLayers);
+          if (this.layers) {
+            layers.push(...this.layers);
           }
           this._layers = layers;
         },
@@ -307,7 +277,6 @@
 
         cancel() {
           this.$.processor.cancel();
-          this.$.syntaxLayer.cancel();
           if (this._cancelableRenderPromise) {
             this._cancelableRenderPromise.cancel();
             this._cancelableRenderPromise = null;
@@ -446,44 +415,10 @@
           };
         },
 
-        /**
-         * @return {boolean} whether any of the lines in _groups are longer
-         * than SYNTAX_MAX_LINE_LENGTH.
-         */
-        _anyLineTooLong() {
-          return this._groups.reduce((acc, group) => {
-            return acc || group.lines.reduce((acc, line) => {
-              return acc || line.text.length >= SYNTAX_MAX_LINE_LENGTH;
-            }, false);
-          }, false);
-        },
-
-        _diffTooLargeForSyntax() {
-          return this._anyLineTooLong() ||
-              this.getDiffLength() > SYNTAX_MAX_DIFF_LENGTH;
-        },
-
         setBlame(blame) {
           if (!this._builder || !blame) { return; }
           this._builder.setBlame(blame);
         },
-
-        /**
-         * Get the approximate length of the diff as the sum of the maximum
-         * length of the chunks.
-         * @return {number}
-         */
-        getDiffLength() {
-          return this.diff.content.reduce((sum, sec) => {
-            if (sec.hasOwnProperty('ab')) {
-              return sum + sec.ab.length;
-            } else {
-              return sum + Math.max(
-                  sec.hasOwnProperty('a') ? sec.a.length : 0,
-                  sec.hasOwnProperty('b') ? sec.b.length : 0);
-            }
-          }, 0);
-        },
       });
     })();
   </script>
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder_test.html b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder_test.html
index 6831a8d..45de810 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder_test.html
@@ -590,38 +590,38 @@
       });
     });
 
-    suite('layers from plugins', () => {
+    suite('layers', () => {
       let element;
       let initialLayersCount;
-      let withPluginLayerCount;
+      let withLayerCount;
       setup(() => {
-        const pluginLayers = [];
+        const layers = [];
         element = fixture('basic');
-        element.pluginLayers = pluginLayers;
+        element.layers = layers;
         element._showTrailingWhitespace = true;
         element._setupAnnotationLayers();
         initialLayersCount = element._layers.length;
       });
 
-      test('no plugin layers', () => {
+      test('no layers', () => {
         element._setupAnnotationLayers();
         assert.equal(element._layers.length, initialLayersCount);
       });
 
-      suite('with plugin layers', () => {
-        const pluginLayers = [{}, {}];
+      suite('with layers', () => {
+        const layers = [{}, {}];
         setup(() => {
           element = fixture('basic');
-          element.pluginLayers = pluginLayers;
+          element.layers = layers;
           element._showTrailingWhitespace = true;
           element._setupAnnotationLayers();
-          withPluginLayerCount = element._layers.length;
+          withLayerCount = element._layers.length;
         });
-        test('with plugin layers', () => {
+        test('with layers', () => {
           element._setupAnnotationLayers();
-          assert.equal(element._layers.length, withPluginLayerCount);
-          assert.equal(initialLayersCount + pluginLayers.length,
-              withPluginLayerCount);
+          assert.equal(element._layers.length, withLayerCount);
+          assert.equal(initialLayersCount + layers.length,
+              withLayerCount);
         });
       });
     });
@@ -733,7 +733,6 @@
         element.viewMode = 'SIDE_BY_SIDE';
         processStub = sandbox.stub(element.$.processor, 'process')
             .returns(Promise.resolve());
-        sandbox.stub(element, '_anyLineTooLong').returns(true);
         keyLocations = {left: {}, right: {}};
         prefs = {
           line_length: 10,
@@ -862,37 +861,14 @@
               .map(c => { return c.args[0].type; });
           assert.include(firedEventTypes, 'render-start');
           assert.include(firedEventTypes, 'render-content');
-          assert.include(firedEventTypes, 'render-syntax');
-          done();
-        });
-      });
-
-      test('rendering normal-sized diff does not disable syntax', () => {
-        assert.isTrue(element.$.syntaxLayer.enabled);
-      });
-
-      test('rendering large diff disables syntax', done => {
-        // Before it renders, set the first diff line to 500 '*' characters.
-        element.diff.content[0].a = [new Array(501).join('*')];
-        const prefs = {
-          line_length: 10,
-          show_tabs: true,
-          tab_size: 4,
-          context: -1,
-          syntax_highlighting: true,
-        };
-        element.render(keyLocations, prefs).then(() => {
-          assert.isFalse(element.$.syntaxLayer.enabled);
           done();
         });
       });
 
       test('cancel', () => {
         const processorCancelStub = sandbox.stub(element.$.processor, 'cancel');
-        const syntaxCancelStub = sandbox.stub(element.$.syntaxLayer, 'cancel');
         element.cancel();
         assert.isTrue(processorCancelStub.called);
-        assert.isTrue(syntaxCancelStub.called);
       });
     });
 
@@ -921,10 +897,6 @@
         });
       });
 
-      test('getDiffLength', () => {
-        assert.equal(element.getDiffLength(diff), 52);
-      });
-
       test('getContentByLine', () => {
         let actual;
 
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-host/gr-diff-host.html b/polygerrit-ui/app/elements/diff/gr-diff-host/gr-diff-host.html
index 13b2269..7d60f13 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-host/gr-diff-host.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-host/gr-diff-host.html
@@ -23,6 +23,7 @@
 <link rel="import" href="../../shared/gr-comment-thread/gr-comment-thread.html">
 <link rel="import" href="../../shared/gr-js-api-interface/gr-js-api-interface.html">
 <link rel="import" href="../gr-diff/gr-diff.html">
+<link rel="import" href="../gr-syntax-layer/gr-syntax-layer.html">
 
 <dom-module id="gr-diff-host">
   <template>
@@ -49,8 +50,13 @@
         revision-image=[[_revisionImage]]
         coverage-ranges="[[_coverageRanges]]"
         blame="[[_blame]]"
-        plugin-layers="[[pluginLayers]]"
-        diff="[[_diff]]"></gr-diff>
+        layers="[[_layers]]"
+        diff="[[diff]]">
+    </gr-diff>
+    <gr-syntax-layer
+        id="syntaxLayer"
+        enabled="[[_syntaxHighlightingEnabled]]"
+        diff="[[diff]]"></gr-syntax-layer>
     <gr-js-api-interface id="jsAPI"></gr-js-api-interface>
     <gr-rest-api-interface id="restAPI"></gr-rest-api-interface>
     <gr-reporting id="reporting" category="diff"></gr-reporting>
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-host/gr-diff-host.js b/polygerrit-ui/app/elements/diff/gr-diff-host/gr-diff-host.js
index 79135a7..a538dcf 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-host/gr-diff-host.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff-host/gr-diff-host.js
@@ -35,6 +35,13 @@
     SYNTAX: 'Diff Syntax Render',
   };
 
+  // Disable syntax highlighting if the overall diff is too large.
+  const SYNTAX_MAX_DIFF_LENGTH = 20000;
+
+  // If any line of the diff is more than the character limit, then disable
+  // syntax highlighting for the entire file.
+  const SYNTAX_MAX_LINE_LENGTH = 500;
+
   const WHITESPACE_IGNORE_NONE = 'IGNORE_NONE';
 
   /**
@@ -104,7 +111,7 @@
       },
       isImageDiff: {
         type: Boolean,
-        computed: '_computeIsImageDiff(_diff)',
+        computed: '_computeIsImageDiff(diff)',
         notify: true,
       },
       commitRange: Object,
@@ -179,8 +186,13 @@
       _baseImage: Object,
       /** @type {?Object} */
       _revisionImage: Object,
-
-      _diff: Object,
+      /**
+       * This is a DiffInfo object.
+       */
+      diff: {
+        type: Object,
+        notify: true,
+      },
 
       /** @type {?Object} */
       _blame: {
@@ -205,7 +217,13 @@
         computed: '_computeParentIndex(patchRange.*)',
       },
 
-      pluginLayers: {
+      _syntaxHighlightingEnabled: {
+        type: Boolean,
+        computed:
+          '_isSyntaxHighlightingEnabled(prefs.syntax_highlighting, _diff)',
+      },
+
+      _layers: {
         type: Array,
         value: [],
       },
@@ -230,7 +248,6 @@
 
       'render-start': '_handleRenderStart',
       'render-content': '_handleRenderContent',
-      'render-syntax': '_handleRenderSyntax',
 
       'normalize-range': '_handleNormalizeRange',
     },
@@ -258,13 +275,13 @@
       this._errorMessage = null;
       const whitespaceLevel = this._getIgnoreWhitespace();
 
-      const pluginLayers = [];
+      const layers = [this.$.syntaxLayer];
       // Get layers from plugins (if any).
       for (const pluginLayer of this.$.jsAPI.getDiffLayers(
           this.diffPath, this.changeNum, this.patchNum)) {
-        pluginLayers.push(pluginLayer);
+        layers.push(pluginLayer);
       }
-      this.push('pluginLayers', ...pluginLayers);
+      this._layers = layers;
 
       this._coverageRanges = [];
       const {changeNum, path, patchRange: {basePatchNum, patchNum}} = this;
@@ -307,12 +324,24 @@
             }
             this.filesWeblinks = this._getFilesWeblinks(diff);
             return new Promise(resolve => {
-              const callback = () => {
-                resolve();
+              const callback = event => {
+                const needsSyntaxHighlighting = event.detail
+                      && event.detail.contentRendered;
+                if (needsSyntaxHighlighting) {
+                  this.$.reporting.time(TimingLabel.SYNTAX);
+                  this.$.syntaxLayer.process().then(() => {
+                    this.$.reporting.timeEnd(TimingLabel.SYNTAX);
+                    this.$.reporting.timeEnd(TimingLabel.TOTAL);
+                    resolve();
+                  });
+                } else {
+                  this.$.reporting.timeEnd(TimingLabel.TOTAL);
+                  resolve();
+                }
                 this.removeEventListener('render', callback);
               };
               this.addEventListener('render', callback);
-              this._diff = diff;
+              this.diff = diff;
             });
           })
           .catch(err => {
@@ -851,6 +880,25 @@
           item => item.__draftID === comment.__draftID);
     },
 
+    _isSyntaxHighlightingEnabled(preference, diff) {
+      if (!preference) return false;
+      return !this._anyLineTooLong(diff) &&
+          this.$.diff.getDiffLength(diff) <= SYNTAX_MAX_DIFF_LENGTH;
+    },
+
+    /**
+     * @return {boolean} whether any of the lines in diff are longer
+     * than SYNTAX_MAX_LINE_LENGTH.
+     */
+    _anyLineTooLong(diff) {
+      return diff.content.some(section => {
+        const lines = section.ab ?
+              section.ab :
+              (section.a || []).concat(section.b || []);
+        return lines.some(line => line.length >= SYNTAX_MAX_LINE_LENGTH);
+      });
+    },
+
     _handleRenderStart() {
       this.$.reporting.time(TimingLabel.TOTAL);
       this.$.reporting.time(TimingLabel.CONTENT);
@@ -858,12 +906,6 @@
 
     _handleRenderContent() {
       this.$.reporting.timeEnd(TimingLabel.CONTENT);
-      this.$.reporting.time(TimingLabel.SYNTAX);
-    },
-
-    _handleRenderSyntax() {
-      this.$.reporting.timeEnd(TimingLabel.SYNTAX);
-      this.$.reporting.timeEnd(TimingLabel.TOTAL);
     },
 
     _handleNormalizeRange(event) {
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-host/gr-diff-host_test.html b/polygerrit-ui/app/elements/diff/gr-diff-host/gr-diff-host_test.html
index f87ef7a..58edfdb 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-host/gr-diff-host_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-host/gr-diff-host_test.html
@@ -60,7 +60,7 @@
 
 
     suite('plugin layers', () => {
-      const pluginLayers = [{}, {}];
+      const pluginLayers = [{annotate: () => {}}, {annotate: () => {}}];
       setup(() => {
         stub('gr-js-api-interface', {
           getDiffLayers() { return pluginLayers; },
@@ -302,24 +302,81 @@
         done();
       });
 
-      test('ends content and starts syntax timer on render-content', done => {
+      test('ends content timer on render-content', () => {
         element.dispatchEvent(
             new CustomEvent('render-content', {bubbles: true, composed: true}));
-        assert.isTrue(element.$.reporting.time.calledWithExactly(
-            'Diff Syntax Render'));
         assert.isTrue(element.$.reporting.timeEnd.calledWithExactly(
             'Diff Content Render'));
-        done();
       });
 
-      test('ends total and syntax timer on render-syntax', done => {
-        element.dispatchEvent(
-            new CustomEvent('render-syntax', {bubbles: true, composed: true}));
-        assert.isTrue(element.$.reporting.timeEnd.calledWithExactly(
-            'Diff Total Render'));
-        assert.isTrue(element.$.reporting.timeEnd.calledWithExactly(
-            'Diff Syntax Render'));
-        done();
+      test('ends total and syntax timer after syntax layer processing', done => {
+        let notifySyntaxProcessed;
+        sandbox.stub(element.$.syntaxLayer, 'process').returns(new Promise(
+            resolve => {
+              notifySyntaxProcessed = resolve;
+            }));
+        sandbox.stub(element.$.restAPI, 'getDiff').returns(
+            Promise.resolve({content: []}));
+        element.patchRange = {};
+        element.$.restAPI.getDiffPreferences().then(prefs => {
+          element.prefs = prefs;
+          return element.reload();
+        });
+        // Multiple cascading microtasks are scheduled.
+        setTimeout(() => {
+          notifySyntaxProcessed();
+          // Assert after the notification task is processed.
+          Promise.resolve().then(() => {
+            assert.isTrue(element.$.reporting.timeEnd.calledThrice);
+            assert.isTrue(element.$.reporting.timeEnd.calledWithExactly(
+                'Diff Total Render'));
+            assert.isTrue(element.$.reporting.timeEnd.calledWithExactly(
+                'Diff Syntax Render'));
+            done();
+          });
+        });
+      });
+
+      test('ends total timer w/ no syntax layer processing', done => {
+        sandbox.stub(element.$.restAPI, 'getDiff').returns(
+            Promise.resolve({content: []}));
+        element.patchRange = {};
+        element.reload();
+        // Multiple cascading microtasks are scheduled.
+        setTimeout(() => {
+          assert.isTrue(element.$.reporting.timeEnd.calledOnce);
+          assert.isTrue(element.$.reporting.timeEnd.calledWithExactly(
+              'Diff Total Render'));
+          done();
+        });
+      });
+
+      test('completes reload promise after syntax layer processing', done => {
+        let notifySyntaxProcessed;
+        sandbox.stub(element.$.syntaxLayer, 'process').returns(new Promise(
+            resolve => {
+              notifySyntaxProcessed = resolve;
+            }));
+        sandbox.stub(element.$.restAPI, 'getDiff').returns(
+            Promise.resolve({content: []}));
+        element.patchRange = {};
+        let reloadComplete = false;
+        element.$.restAPI.getDiffPreferences().then(prefs => {
+          element.prefs = prefs;
+          return element.reload();
+        }).then(() => {
+          reloadComplete = true;
+        });
+        // Multiple cascading microtasks are scheduled.
+        setTimeout(() => {
+          assert.isFalse(reloadComplete);
+          notifySyntaxProcessed();
+          // Assert after the notification task is processed.
+          setTimeout(() => {
+            assert.isTrue(reloadComplete);
+            done();
+          });
+        });
       });
     });
 
@@ -1285,5 +1342,57 @@
       assert.deepEqual(element._filterThreadElsForLocation(threadEls, line,
           Gerrit.DiffSide.RIGHT), [r]);
     });
+
+    suite('syntax layer', () => {
+      setup(() => {
+        const prefs = {
+          line_length: 10,
+          show_tabs: true,
+          tab_size: 4,
+          context: -1,
+          syntax_highlighting: true,
+        };
+        element.prefs = prefs;
+      });
+
+      test('gr-diff-host provides syntax highlighting layer to gr-diff', () => {
+        element.patchRange = {};
+        element.reload();
+        assert.equal(element.$.diff.layers[0], element.$.syntaxLayer);
+      });
+
+      test('rendering normal-sized diff does not disable syntax', () => {
+        element._diff = {
+          content: [{
+            a: ['foo'],
+          }],
+        };
+        assert.isTrue(element.$.syntaxLayer.enabled);
+      });
+
+      test('rendering large diff disables syntax', () => {
+        // Before it renders, set the first diff line to 500 '*' characters.
+        element._diff = {
+          content: [{
+            a: [new Array(501).join('*')],
+          }],
+        };
+        assert.isFalse(element.$.syntaxLayer.enabled);
+      });
+
+      test('starts syntax layer processing on render event', done => {
+        sandbox.stub(element.$.syntaxLayer, 'process').returns(Promise.resolve());
+        sandbox.stub(element.$.restAPI, 'getDiff').returns(
+            Promise.resolve({content: []}));
+        element.patchRange = {};
+        element.reload();
+        setTimeout(() => {
+          element.dispatchEvent(
+              new CustomEvent('render', {bubbles: true, composed: true}));
+          assert.isTrue(element.$.syntaxLayer.process.called);
+          done();
+        });
+      });
+    });
   });
 </script>
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.html b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.html
index 5968ea5..059a8fd 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.html
@@ -271,7 +271,7 @@
             <gr-dropdown
                 link
                 down-arrow
-                items="[[_computeDownloadDropdownLinks(_change.project, _changeNum, _patchRange, _path)]]"
+                items="[[_computeDownloadDropdownLinks(_change.project, _changeNum, _patchRange, _path, _diff)]]"
                 horizontal-align="left">
               <span class="downloadTitle">
                 Download
@@ -334,6 +334,7 @@
         class$="[[_computeDiffClass(_panelFloatingDisabled)]]"
         is-image-diff="{{_isImageDiff}}"
         files-weblinks="{{_filesWeblinks}}"
+        diff="{{_diff}}"
         change-num="[[_changeNum]]"
         commit-range="[[_commitRange]]"
         patch-range="[[_patchRange]]"
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.js b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.js
index 8712e30..854e325 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.js
@@ -93,6 +93,10 @@
       /** @type {?} */
       _changeComments: Object,
       _changeNum: String,
+      /**
+       * This is a DiffInfo object.
+       * This is retrieved and owned by a child component.
+       */
       _diff: Object,
       // An array specifically formatted to be used in a gr-dropdown-list
       // element for selected a file to view.
@@ -910,33 +914,63 @@
       history.replaceState(null, '', url);
     },
 
-    _computeDownloadDropdownLinks(project, changeNum, patchRange, path) {
+    _computeDownloadDropdownLinks(
+        project, changeNum, patchRange, path, diff) {
       if (!patchRange || !patchRange.patchNum) { return []; }
 
-      return [
+      const links = [
         {
           url: this._computeDownloadPatchLink(
               project, changeNum, patchRange, path),
           name: 'Patch',
         },
-        {
-          // We pass 1 here to indicate this is parent 1.
-          url: this._computeDownloadFileLink(
-              project, changeNum, patchRange, path, 1),
-          name: 'Left Content',
-        },
-        {
-          // We pass 0 here to indicate this is parent 0.
-          url: this._computeDownloadFileLink(
-              project, changeNum, patchRange, path, 0),
-          name: 'Right Content',
-        },
       ];
+
+      if (diff && diff.meta_a) {
+        let leftPath = path;
+        if (diff.change_type === 'RENAMED') {
+          leftPath = diff.meta_a.name;
+        }
+        links.push(
+            {
+              url: this._computeDownloadFileLink(
+                  project, changeNum, patchRange, leftPath, true),
+              name: 'Left Content',
+            }
+        );
+      }
+
+      if (diff && diff.meta_b) {
+        links.push(
+            {
+              url: this._computeDownloadFileLink(
+                  project, changeNum, patchRange, path, false),
+              name: 'Right Content',
+            }
+        );
+      }
+
+      return links;
     },
 
-    _computeDownloadFileLink(project, changeNum, patchRange, path, parent) {
-      return this.changeBaseURL(project, changeNum, patchRange.patchNum) +
-          `/files/${encodeURIComponent(path)}/download?parent=${parent}`;
+    _computeDownloadFileLink(
+        project, changeNum, patchRange, path, isBase) {
+      let patchNum = patchRange.patchNum;
+
+      const comparedAgainsParent = patchRange.basePatchNum === 'PARENT';
+
+      if (isBase && !comparedAgainsParent) {
+        patchNum = patchRange.basePatchNum;
+      }
+
+      let url = this.changeBaseURL(project, changeNum, patchNum) +
+          `/files/${encodeURIComponent(path)}/download`;
+
+      if (isBase && comparedAgainsParent) {
+        url += '?parent=1';
+      }
+
+      return url;
     },
 
     _computeDownloadPatchLink(project, changeNum, patchRange, path) {
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view_test.html b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view_test.html
index a2bf8dd..6427844 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view_test.html
@@ -1178,26 +1178,79 @@
         },
         {
           url: '/changes/test~12/revisions/1' +
-              '/files/index.php/download?parent=0',
+              '/files/index.php/download',
           name: 'Right Content',
         },
       ];
+
+      const side = {
+        meta_a: true,
+        meta_b: true,
+      };
+
+      const base = {
+        patchNum: 1,
+        basePatchNum: 'PARENT',
+      };
+
       assert.deepEqual(
           element._computeDownloadDropdownLinks(
-              'test', 12, {patchNum: 1}, 'index.php'),
+              'test', 12, base, 'index.php', side),
+          downloadLinks);
+    });
+
+    test('_computeDownloadDropdownLinks diff returns renamed', () => {
+      const downloadLinks = [
+        {
+          url: '/changes/test~12/revisions/3/patch?zip&path=index.php',
+          name: 'Patch',
+        },
+        {
+          url: '/changes/test~12/revisions/2' +
+              '/files/index2.php/download',
+          name: 'Left Content',
+        },
+        {
+          url: '/changes/test~12/revisions/3' +
+              '/files/index.php/download',
+          name: 'Right Content',
+        },
+      ];
+
+      const side = {
+        change_type: 'RENAMED',
+        meta_a: {
+          name: 'index2.php',
+        },
+        meta_b: true,
+      };
+
+      const base = {
+        patchNum: 3,
+        basePatchNum: 2,
+      };
+
+      assert.deepEqual(
+          element._computeDownloadDropdownLinks(
+              'test', 12, base, 'index.php', side),
           downloadLinks);
     });
 
     test('_computeDownloadFileLink', () => {
+      const base = {
+        patchNum: 1,
+        basePatchNum: 'PARENT',
+      };
+
       assert.equal(
           element._computeDownloadFileLink(
-              'test', 12, {patchNum: 1}, 'index.php', 1),
+              'test', 12, base, 'index.php', true),
           '/changes/test~12/revisions/1/files/index.php/download?parent=1');
 
       assert.equal(
           element._computeDownloadFileLink(
-              'test', 12, {patchNum: 1}, 'index.php', 0),
-          '/changes/test~12/revisions/1/files/index.php/download?parent=0');
+              'test', 12, base, 'index.php', false),
+          '/changes/test~12/revisions/1/files/index.php/download');
     });
 
     test('_computeDownloadPatchLink', () => {
diff --git a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.html b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.html
index 32fa7e5..374368c 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.html
@@ -378,7 +378,7 @@
               line-wrapping="[[lineWrapping]]"
               is-image-diff="[[isImageDiff]]"
               base-image="[[baseImage]]"
-              plugin-layers="[[pluginLayers]]"
+              layers="[[layers]]"
               revision-image="[[revisionImage]]">
             <table
                 id="diffTable"
diff --git a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.js b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.js
index 16c92b1..7606928 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.js
@@ -271,7 +271,7 @@
 
       /** Set by Polymer. */
       isAttached: Boolean,
-      pluginLayers: Array,
+      layers: Array,
     },
 
     behaviors: [
@@ -724,7 +724,7 @@
 
     _diffChanged(newValue) {
       if (newValue) {
-        this._diffLength = this.$.diffBuilder.getDiffLength();
+        this._diffLength = this.getDiffLength(newValue);
         this._debounceRenderDiffTable();
       }
     },
@@ -766,7 +766,11 @@
       this.$.diffBuilder.render(keyLocations, this._getBypassPrefs())
           .then(() => {
             this.dispatchEvent(
-                new CustomEvent('render', {bubbles: true, composed: true}));
+                new CustomEvent('render', {
+                  bubbles: true,
+                  composed: true,
+                  detail: {contentRendered: true},
+                }));
           });
     },
 
@@ -955,5 +959,23 @@
       if (loading || !warning) { return 'newlineWarning hidden'; }
       return 'newlineWarning';
     },
+
+    /**
+     * Get the approximate length of the diff as the sum of the maximum
+     * length of the chunks.
+     * @param {Object} diff object
+     * @return {number}
+     */
+    getDiffLength(diff) {
+      return diff.content.reduce((sum, sec) => {
+        if (sec.hasOwnProperty('ab')) {
+          return sum + sec.ab.length;
+        } else {
+          return sum + Math.max(
+              sec.hasOwnProperty('a') ? sec.a.length : 0,
+              sec.hasOwnProperty('b') ? sec.b.length : 0);
+        }
+      }, 0);
+    },
   });
 })();
diff --git a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff_test.html b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff_test.html
index 15deaff..5366664 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff_test.html
@@ -767,7 +767,7 @@
                   new CustomEvent('render', {bubbles: true, composed: true}));
             });
         const mock = document.createElement('mock-diff-response');
-        sandbox.stub(element.$.diffBuilder, 'getDiffLength').returns(10000);
+        sandbox.stub(element, 'getDiffLength').returns(10000);
         element.diff = mock.diffResponse;
         element.noRenderOnPrefsChange = true;
       });
@@ -1101,6 +1101,23 @@
           ));
       });
     });
+
+    test('getDiffLength', () => {
+      const diff = document.createElement('mock-diff-response').diffResponse;
+      assert.equal(element.getDiffLength(diff), 52);
+    });
+
+    test('`render` event has contentRendered field in detail', done => {
+      element = fixture('basic');
+      element.prefs = {};
+      renderStub = sandbox.stub(element.$.diffBuilder, 'render')
+            .returns(Promise.resolve());
+      element.addEventListener('render', event => {
+        assert.isTrue(event.detail.contentRendered);
+        done();
+      });
+      element._renderDiffTable();
+    });
   });
 
   a11ySuite('basic');
diff --git a/polygerrit-ui/app/elements/diff/gr-syntax-layer/gr-syntax-layer.js b/polygerrit-ui/app/elements/diff/gr-syntax-layer/gr-syntax-layer.js
index 627a279..fcaa696 100644
--- a/polygerrit-ui/app/elements/diff/gr-syntax-layer/gr-syntax-layer.js
+++ b/polygerrit-ui/app/elements/diff/gr-syntax-layer/gr-syntax-layer.js
@@ -225,7 +225,7 @@
     process() {
       // Cancel any still running process() calls, because they append to the
       // same _baseRanges and _revisionRanges fields.
-      this.cancel();
+      this._cancel();
 
       // Discard existing ranges.
       this._baseRanges = [];
@@ -295,7 +295,7 @@
     /**
      * Cancel any asynchronous syntax processing jobs.
      */
-    cancel() {
+    _cancel() {
       if (this._processHandle != null) {
         this.cancelAsync(this._processHandle);
         this._processHandle = null;
@@ -306,7 +306,7 @@
     },
 
     _diffChanged() {
-      this.cancel();
+      this._cancel();
       this._baseRanges = [];
       this._revisionRanges = [];
     },
diff --git a/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete.html b/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete.html
index 46877d7..1fa3db1 100644
--- a/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete.html
+++ b/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete.html
@@ -77,30 +77,13 @@
         on-blur="_onInputBlur"
         autocomplete="off">
 
-      <template is="dom-if" if="[[_isPolymer2()]]">
-        <!-- Content uses vertical-align:baseline. If iron-icon is placed
-          directly in the slot and is not visible,  vertical-align doesn't
-          work, because display:none convert it from inline-block element to
-          block element. To fix this problem, iron-icon is wrapped in div
-          which never changes display type.
-          The problem doesn't exist in Polymer1 because DOM is different.
-          Applying the same fix to Polymer1 breaks vertical-align.
-        -->
-        <div slot="prefix">
-          <iron-icon
-            icon="gr-icons:search"
-            class$="searchIcon [[_computeShowSearchIconClass(showSearchIcon)]]">
-          </iron-icon>
-        </div>
-      </template>
-      <template is="dom-if" if="[[!_isPolymer2()]]">
+      <!-- prefix as attribute is required to for polymer 1 -->
+      <div slot="prefix" prefix>
         <iron-icon
-          prefix
           icon="gr-icons:search"
           class$="searchIcon [[_computeShowSearchIconClass(showSearchIcon)]]">
         </iron-icon>
-      </template>
-
+      </div>
     </paper-input>
     <gr-autocomplete-dropdown
         vertical-align="top"
diff --git a/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete.js b/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete.js
index 745cff1..d422df8 100644
--- a/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete.js
+++ b/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete.js
@@ -196,7 +196,7 @@
     },
 
     focus() {
-      this.$.input.focus();
+      this._nativeInput.focus();
     },
 
     selectAll() {
@@ -330,7 +330,7 @@
         default:
           // For any normal keypress, return focus to the input to allow for
           // unbroken user input.
-          this.$.input.inputElement.focus();
+          this.focus();
 
           // Since this has been a normal keypress, the suggestions will have
           // been based on a previous input. Clear them. This prevents an
@@ -430,9 +430,5 @@
     _computeShowSearchIconClass(showSearchIcon) {
       return showSearchIcon ? 'showSearchIcon' : '';
     },
-
-    _isPolymer2() {
-      return window.POLYMER2;
-    },
   });
 })();
diff --git a/polygerrit-ui/app/elements/shared/gr-copy-clipboard/gr-copy-clipboard.html b/polygerrit-ui/app/elements/shared/gr-copy-clipboard/gr-copy-clipboard.html
index 941f99c..06510dc 100644
--- a/polygerrit-ui/app/elements/shared/gr-copy-clipboard/gr-copy-clipboard.html
+++ b/polygerrit-ui/app/elements/shared/gr-copy-clipboard/gr-copy-clipboard.html
@@ -36,7 +36,7 @@
       .hideInput {
         display: none;
       }
-      input {
+      input#input {
         font-family: var(--monospace-font-family);
         font-size: inherit;
         @apply --text-container-style;
diff --git a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-api-utils.js b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-api-utils.js
new file mode 100644
index 0000000..cf2376e
--- /dev/null
+++ b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-api-utils.js
@@ -0,0 +1,95 @@
+/**
+ * @license
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+(function(window) {
+  'use strict';
+
+  const PRELOADED_PROTOCOL = 'preloaded:';
+
+  let _restAPI;
+
+  const getRestAPI = () => {
+    if (!_restAPI) {
+      _restAPI = document.createElement('gr-rest-api-interface');
+    }
+    return _restAPI;
+  };
+
+  function getPluginNameFromUrl(url) {
+    if (!(url instanceof URL)) {
+      try {
+        url = new URL(url);
+      } catch (e) {
+        console.warn(e);
+        return null;
+      }
+    }
+    if (url.protocol === PRELOADED_PROTOCOL) {
+      return url.pathname;
+    }
+    const base = Gerrit.BaseUrlBehavior.getBaseUrl();
+    const pathname = url.pathname.replace(base, '');
+    // Site theme is server from predefined path.
+    if (pathname === '/static/gerrit-theme.html') {
+      return 'gerrit-theme';
+    } else if (!pathname.startsWith('/plugins')) {
+      console.warn('Plugin not being loaded from /plugins base path:',
+          url.href, '— Unable to determine name.');
+      return null;
+    }
+    // Pathname should normally look like this:
+    // /plugins/PLUGINNAME/static/SCRIPTNAME.html
+    // Or, for app/samples:
+    // /plugins/PLUGINNAME.html
+    return pathname.split('/')[2].split('.')[0];
+  }
+
+  // TODO (viktard): deprecate in favor of GrPluginRestApi.
+  function send(method, url, opt_callback, opt_payload) {
+    return getRestAPI().send(method, url, opt_payload).then(response => {
+      if (response.status < 200 || response.status >= 300) {
+        return response.text().then(text => {
+          if (text) {
+            return Promise.reject(text);
+          } else {
+            return Promise.reject(response.status);
+          }
+        });
+      } else {
+        return getRestAPI().getResponseObject(response);
+      }
+    }).then(response => {
+      if (opt_callback) {
+        opt_callback(response);
+      }
+      return response;
+    });
+  }
+
+  function resetInternalState() {
+    _restAPI = null;
+  }
+
+  window._apiUtils = {
+    getPluginNameFromUrl,
+    send,
+    getRestAPI,
+
+    // TEST only methods
+    resetInternalState,
+  };
+})(window);
\ No newline at end of file
diff --git a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-api-utils_test.html b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-api-utils_test.html
new file mode 100644
index 0000000..c407aa8
--- /dev/null
+++ b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-api-utils_test.html
@@ -0,0 +1,78 @@
+<!DOCTYPE html>
+<!--
+@license
+Copyright (C) 2019 The Android Open Source Project
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
+<title>gr-api-interface</title>
+<script src="/test/common-test-setup.js"></script>
+<script src="/bower_components/webcomponentsjs/custom-elements-es5-adapter.js"></script>
+
+<script src="/bower_components/webcomponentsjs/webcomponents-lite.js"></script>
+<script src="/bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
+<link rel="import" href="gr-js-api-interface.html">
+
+<script>void(0);</script>
+
+<script>
+
+  const PRELOADED_PROTOCOL = 'preloaded:';
+
+  suite('gr-api-utils tests', () => {
+    suite('test getPluginNameFromUrl', () => {
+      const {getPluginNameFromUrl} = window._apiUtils;
+
+      test('with empty string', () => {
+        assert.equal(getPluginNameFromUrl(''), null);
+      });
+
+      test('with invalid url', () => {
+        assert.equal(getPluginNameFromUrl('test'), null);
+      });
+
+      test('with random invalid url', () => {
+        assert.equal(getPluginNameFromUrl('http://example.com'), null);
+        assert.equal(
+            getPluginNameFromUrl('http://example.com/static/a.html'),
+            null
+        );
+      });
+
+      test('with valid urls', () => {
+        assert.equal(
+            getPluginNameFromUrl('http://example.com/plugins/a.html'),
+            'a'
+        );
+        assert.equal(
+            getPluginNameFromUrl('http://example.com/plugins/a/static/t.html'),
+            'a'
+        );
+      });
+
+      test('with preloaded urls', () => {
+        assert.equal(getPluginNameFromUrl(`${PRELOADED_PROTOCOL}a`), 'a');
+      });
+
+      test('with gerrit-theme override', () => {
+        assert.equal(
+            getPluginNameFromUrl('http://example.com/static/gerrit-theme.html'),
+            'gerrit-theme'
+        );
+      });
+    });
+  });
+</script>
\ No newline at end of file
diff --git a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-gerrit.js b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-gerrit.js
new file mode 100644
index 0000000..8cdbcb7
--- /dev/null
+++ b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-gerrit.js
@@ -0,0 +1,280 @@
+/**
+ * @license
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+(function(window) {
+  'use strict';
+
+  /**
+   * Hash of loaded and installed plugins, name to Plugin object.
+   */
+  const _plugins = {};
+
+  /**
+   * Array of plugin URLs to be loaded, name to url.
+   */
+  let _pluginsPending = {};
+
+  let _pluginsInstalled = [];
+
+  let _pluginsPendingCount = -1;
+
+  const UNKNOWN_PLUGIN = 'unknown';
+  const PRELOADED_PROTOCOL = 'preloaded:';
+
+  const PLUGIN_LOADING_TIMEOUT_MS = 10000;
+
+  let _reporting;
+  const getReporting = () => {
+    if (!_reporting) {
+      _reporting = document.createElement('gr-reporting');
+    }
+    return _reporting;
+  };
+
+  // Import utils methods
+  const {
+      getPluginNameFromUrl,
+      send,
+      getRestAPI,
+      resetInternalState,
+  } = window._apiUtils;
+
+  const API_VERSION = '0.1';
+
+  window.Gerrit = window.Gerrit || {};
+  const Gerrit = window.Gerrit;
+
+  let _resolveAllPluginsLoaded = null;
+  let _allPluginsPromise = null;
+
+  Gerrit._endpoints = new GrPluginEndpoints();
+
+  // Provide reset plugins function to clear installed plugins between tests.
+  const app = document.querySelector('#app');
+  if (!app) {
+    // No gr-app found (running tests)
+    Gerrit._installPreloadedPlugins = installPreloadedPlugins;
+    Gerrit._flushPreinstalls = flushPreinstalls;
+    Gerrit._resetPlugins = () => {
+      _allPluginsPromise = null;
+      _pluginsInstalled = [];
+      _pluginsPending = {};
+      _pluginsPendingCount = -1;
+      _reporting = null;
+      _resolveAllPluginsLoaded = null;
+      resetInternalState();
+      Gerrit._endpoints = new GrPluginEndpoints();
+      for (const k of Object.keys(_plugins)) {
+        delete _plugins[k];
+      }
+    };
+  }
+
+  /**
+   * @deprecated Use plugin.styles().css(rulesStr) instead. Please, consult
+   * the documentation how to replace it accordingly.
+   */
+  Gerrit.css = function(rulesStr) {
+    console.warn('Gerrit.css(rulesStr) is deprecated!',
+        'Use plugin.styles().css(rulesStr)');
+    if (!Gerrit._customStyleSheet) {
+      const styleEl = document.createElement('style');
+      document.head.appendChild(styleEl);
+      Gerrit._customStyleSheet = styleEl.sheet;
+    }
+
+    const name = '__pg_js_api_class_' +
+        Gerrit._customStyleSheet.cssRules.length;
+    Gerrit._customStyleSheet.insertRule('.' + name + '{' + rulesStr + '}', 0);
+    return name;
+  };
+
+  Gerrit.install = function(callback, opt_version, opt_src) {
+    // HTML import polyfill adds __importElement pointing to the import tag.
+    const script = document.currentScript &&
+        (document.currentScript.__importElement || document.currentScript);
+
+    let src = opt_src || (script && script.src);
+    if (!src || src.startsWith('data:')) {
+      src = script && script.baseURI;
+    }
+    const name = getPluginNameFromUrl(src);
+
+    if (opt_version && opt_version !== API_VERSION) {
+      Gerrit._pluginInstallError(`Plugin ${name} install error: only version ` +
+          API_VERSION + ' is supported in PolyGerrit. ' + opt_version +
+          ' was given.');
+      return;
+    }
+
+    const existingPlugin = _plugins[name];
+    const plugin = existingPlugin || new Plugin(src);
+    try {
+      callback(plugin);
+      if (name) {
+        _plugins[name] = plugin;
+      }
+      if (!existingPlugin) {
+        Gerrit._pluginInstalled(src);
+      }
+    } catch (e) {
+      Gerrit._pluginInstallError(`${e.name}: ${e.message}`);
+    }
+  };
+
+  Gerrit.getLoggedIn = function() {
+    console.warn('Gerrit.getLoggedIn() is deprecated! ' +
+        'Use plugin.restApi().getLoggedIn()');
+    return document.createElement('gr-rest-api-interface').getLoggedIn();
+  };
+
+  Gerrit.get = function(url, callback) {
+    console.warn('.get() is deprecated! Use plugin.restApi().get()');
+    send('GET', url, callback);
+  };
+
+  Gerrit.post = function(url, payload, callback) {
+    console.warn('.post() is deprecated! Use plugin.restApi().post()');
+    send('POST', url, callback, payload);
+  };
+
+  Gerrit.put = function(url, payload, callback) {
+    console.warn('.put() is deprecated! Use plugin.restApi().put()');
+    send('PUT', url, callback, payload);
+  };
+
+  Gerrit.delete = function(url, opt_callback) {
+    console.warn('.delete() is deprecated! Use plugin.restApi().delete()');
+    return getRestAPI().send('DELETE', url).then(response => {
+      if (response.status !== 204) {
+        return response.text().then(text => {
+          if (text) {
+            return Promise.reject(text);
+          } else {
+            return Promise.reject(response.status);
+          }
+        });
+      }
+      if (opt_callback) {
+        opt_callback(response);
+      }
+      return response;
+    });
+  };
+
+  Gerrit.awaitPluginsLoaded = function() {
+    if (!_allPluginsPromise) {
+      if (Gerrit._arePluginsLoaded()) {
+        _allPluginsPromise = Promise.resolve();
+      } else {
+        let timeoutId;
+        _allPluginsPromise =
+          Promise.race([
+            new Promise(resolve => _resolveAllPluginsLoaded = resolve),
+            new Promise(resolve => timeoutId = setTimeout(
+                Gerrit._pluginLoadingTimeout, PLUGIN_LOADING_TIMEOUT_MS)),
+          ]).then(() => clearTimeout(timeoutId));
+      }
+    }
+    return _allPluginsPromise;
+  };
+
+  Gerrit._pluginLoadingTimeout = function() {
+    console.error(`Failed to load plugins: ${Object.keys(_pluginsPending)}`);
+    Gerrit._setPluginsPending([]);
+  };
+
+  Gerrit._setPluginsPending = function(plugins) {
+    _pluginsPending = plugins.reduce((o, url) => {
+      // TODO(viktard): Remove guard (@see Issue 8962)
+      o[getPluginNameFromUrl(url) || UNKNOWN_PLUGIN] = url;
+      return o;
+    }, {});
+    Gerrit._setPluginsCount(Object.keys(_pluginsPending).length);
+  };
+
+  Gerrit._setPluginsCount = function(count) {
+    _pluginsPendingCount = count;
+    if (Gerrit._arePluginsLoaded()) {
+      getReporting().pluginsLoaded(_pluginsInstalled);
+      if (_resolveAllPluginsLoaded) {
+        _resolveAllPluginsLoaded();
+      }
+    }
+  };
+
+  Gerrit._pluginInstallError = function(message) {
+    document.dispatchEvent(new CustomEvent('show-alert', {
+      detail: {
+        message: `Plugin install error: ${message}`,
+      },
+    }));
+    console.info(`Plugin install error: ${message}`);
+    Gerrit._setPluginsCount(_pluginsPendingCount - 1);
+  };
+
+  Gerrit._pluginInstalled = function(url) {
+    const name = getPluginNameFromUrl(url) || UNKNOWN_PLUGIN;
+    if (!_pluginsPending[name]) {
+      console.warn(`Unexpected plugin ${name} installed from ${url}.`);
+    } else {
+      delete _pluginsPending[name];
+      _pluginsInstalled.push(name);
+      Gerrit._setPluginsCount(_pluginsPendingCount - 1);
+      getReporting().pluginLoaded(name);
+      console.log(`Plugin ${name} installed.`);
+    }
+  };
+
+  Gerrit._arePluginsLoaded = function() {
+    return _pluginsPendingCount === 0;
+  };
+
+  Gerrit._getPluginScreenName = function(pluginName, screenName) {
+    return `${pluginName}-screen-${screenName}`;
+  };
+
+  Gerrit._isPluginPreloaded = function(url) {
+    const name = getPluginNameFromUrl(url);
+    if (name && Gerrit._preloadedPlugins) {
+      return name in Gerrit._preloadedPlugins;
+    } else {
+      return false;
+    }
+  };
+
+  function flushPreinstalls() {
+    if (window.Gerrit.flushPreinstalls) {
+      window.Gerrit.flushPreinstalls();
+    }
+  }
+
+  function installPreloadedPlugins() {
+    if (!Gerrit._preloadedPlugins) { return; }
+    for (const name in Gerrit._preloadedPlugins) {
+      if (!Gerrit._preloadedPlugins.hasOwnProperty(name)) { continue; }
+      const callback = Gerrit._preloadedPlugins[name];
+      Gerrit.install(callback, API_VERSION, PRELOADED_PROTOCOL + name);
+    }
+  }
+
+  flushPreinstalls();
+
+  // Preloaded plugins should be installed after Gerrit.install() is set,
+  // since plugin preloader substitutes Gerrit.install() temporarily.
+  installPreloadedPlugins();
+})(window);
\ No newline at end of file
diff --git a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-gerrit_test.html b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-gerrit_test.html
new file mode 100644
index 0000000..b3ec30f
--- /dev/null
+++ b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-gerrit_test.html
@@ -0,0 +1,188 @@
+<!DOCTYPE html>
+<!--
+@license
+Copyright (C) 2019 The Android Open Source Project
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
+<title>gr-api-interface</title>
+<script src="/test/common-test-setup.js"></script>
+<script src="/bower_components/webcomponentsjs/custom-elements-es5-adapter.js"></script>
+
+<script src="/bower_components/webcomponentsjs/webcomponents-lite.js"></script>
+<script src="/bower_components/web-component-tester/browser.js"></script>
+<link rel="import" href="../../../test/common-test-setup.html"/>
+<link rel="import" href="gr-js-api-interface.html">
+
+<script>void(0);</script>
+
+<test-fixture id="basic">
+  <template>
+    <gr-js-api-interface></gr-js-api-interface>
+  </template>
+</test-fixture>
+
+<script>
+  suite('gr-gerrit tests', () => {
+    let element;
+    let plugin;
+    let sandbox;
+    let sendStub;
+
+    setup(() => {
+      sandbox = sinon.sandbox.create();
+      sendStub = sandbox.stub().returns(Promise.resolve({status: 200}));
+      stub('gr-rest-api-interface', {
+        getAccount() {
+          return Promise.resolve({name: 'Judy Hopps'});
+        },
+        send(...args) {
+          return sendStub(...args);
+        },
+      });
+      element = fixture('basic');
+      Gerrit.install(p => { plugin = p; }, '0.1',
+          'http://test.com/plugins/testplugin/static/test.js');
+      Gerrit._setPluginsPending([]);
+    });
+
+    teardown(() => {
+      sandbox.restore();
+      element._removeEventCallbacks();
+      plugin = null;
+    });
+
+    test('reuse plugin for install calls', () => {
+      let otherPlugin;
+      Gerrit.install(p => { otherPlugin = p; }, '0.1',
+          'http://test.com/plugins/testplugin/static/test.js');
+      assert.strictEqual(plugin, otherPlugin);
+    });
+
+    test('flushes preinstalls if provided', () => {
+      assert.doesNotThrow(() => {
+        Gerrit._flushPreinstalls();
+      });
+      window.Gerrit.flushPreinstalls = sandbox.stub();
+      Gerrit._flushPreinstalls();
+      assert.isTrue(window.Gerrit.flushPreinstalls.calledOnce);
+      delete window.Gerrit.flushPreinstalls;
+    });
+
+    test('versioning', () => {
+      const callback = sandbox.spy();
+      Gerrit.install(callback, '0.0pre-alpha');
+      assert(callback.notCalled);
+    });
+
+    test('_setPluginsCount', done => {
+      stub('gr-reporting', {
+        pluginsLoaded() {
+          done();
+        },
+      });
+      Gerrit._setPluginsCount(0);
+    });
+
+    test('_arePluginsLoaded', () => {
+      assert.isTrue(Gerrit._arePluginsLoaded());
+      Gerrit._setPluginsCount(1);
+      assert.isFalse(Gerrit._arePluginsLoaded());
+      Gerrit._setPluginsCount(0);
+      assert.isTrue(Gerrit._arePluginsLoaded());
+    });
+
+    test('_pluginInstalled', () => {
+      const pluginsLoadedStub = sandbox.stub();
+      stub('gr-reporting', {
+        pluginsLoaded: (...args) => pluginsLoadedStub(...args),
+      });
+      const plugins = [
+        'http://test.com/plugins/foo/static/test.js',
+        'http://test.com/plugins/bar/static/test.js',
+      ];
+      Gerrit._setPluginsPending(plugins);
+      Gerrit._pluginInstalled(plugins[0]);
+      Gerrit._pluginInstalled(plugins[1]);
+      assert.isTrue(pluginsLoadedStub.calledWithExactly(['foo', 'bar']));
+    });
+
+    test('install calls _pluginInstalled', () => {
+      sandbox.stub(Gerrit, '_pluginInstalled');
+      Gerrit.install(p => { plugin = p; }, '0.1',
+          'http://test.com/plugins/testplugin/static/test.js');
+
+      // testplugin has already been installed once (in setup).
+      assert.isFalse(Gerrit._pluginInstalled.called);
+
+      // testplugin2 plugin has not yet been installed.
+      Gerrit.install(p => { plugin = p; }, '0.1',
+          'http://test.com/plugins/testplugin2/static/test.js');
+      assert.isTrue(Gerrit._pluginInstalled.calledOnce);
+    });
+
+    test('plugin install errors mark plugins as loaded', () => {
+      Gerrit._setPluginsCount(1);
+      Gerrit.install(() => {}, '0.0pre-alpha');
+      return Gerrit.awaitPluginsLoaded();
+    });
+
+    test('multiple ui plugins per java plugin', () => {
+      const file1 = 'http://test.com/plugins/qaz/static/foo.nocache.js';
+      const file2 = 'http://test.com/plugins/qaz/static/bar.js';
+      Gerrit._setPluginsPending([file1, file2]);
+      Gerrit.install(() => {}, '0.1', file1);
+      Gerrit.install(() => {}, '0.1', file2);
+      return Gerrit.awaitPluginsLoaded();
+    });
+
+    test('plugin install errors shows toasts', () => {
+      const alertStub = sandbox.stub();
+      document.addEventListener('show-alert', alertStub);
+      Gerrit._setPluginsCount(1);
+      Gerrit.install(() => {}, '0.0pre-alpha');
+      return Gerrit.awaitPluginsLoaded().then(() => {
+        assert.isTrue(alertStub.calledOnce);
+      });
+    });
+
+    test('Gerrit._isPluginPreloaded', () => {
+      Gerrit._preloadedPlugins = {baz: ()=>{}};
+      assert.isFalse(Gerrit._isPluginPreloaded('plugins/foo/bar'));
+      assert.isFalse(Gerrit._isPluginPreloaded('http://a.com/42'));
+      assert.isTrue(Gerrit._isPluginPreloaded('preloaded:baz'));
+      Gerrit._preloadedPlugins = null;
+    });
+
+    test('preloaded plugins are installed', () => {
+      const installStub = sandbox.stub();
+      Gerrit._preloadedPlugins = {foo: installStub};
+      Gerrit._installPreloadedPlugins();
+      assert.isTrue(installStub.called);
+      const pluginApi = installStub.lastCall.args[0];
+      assert.strictEqual(pluginApi.getPluginName(), 'foo');
+    });
+
+    test('installing preloaded plugin', () => {
+      let plugin;
+      window.ASSETS_PATH = 'http://blips.com/chitz';
+      Gerrit.install(p => { plugin = p; }, '0.1', 'preloaded:foo');
+      assert.strictEqual(plugin.getPluginName(), 'foo');
+      assert.strictEqual(plugin.url('/some/thing.html'),
+          'http://blips.com/chitz/plugins/foo/some/thing.html');
+      delete window.ASSETS_PATH;
+    });
+  });
+</script>
diff --git a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-js-api-interface.html b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-js-api-interface.html
index e460660..7fa2250 100644
--- a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-js-api-interface.html
+++ b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-js-api-interface.html
@@ -31,6 +31,7 @@
 <link rel="import" href="../gr-rest-api-interface/gr-rest-api-interface.html">
 
 <dom-module id="gr-js-api-interface">
+  <script src="gr-api-utils.js"></script>
   <script src="gr-annotation-actions-context.js"></script>
   <script src="gr-annotation-actions-js-api.js"></script>
   <script src="gr-change-actions-js-api.js"></script>
@@ -40,4 +41,5 @@
   <script src="gr-plugin-action-context.js"></script>
   <script src="gr-plugin-rest-api.js"></script>
   <script src="gr-public-js-api.js"></script>
+  <script src="gr-gerrit.js"></script>
 </dom-module>
diff --git a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-js-api-interface_test.html b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-js-api-interface_test.html
index c7e4f09..330310f 100644
--- a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-js-api-interface_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-js-api-interface_test.html
@@ -73,23 +73,6 @@
       plugin = null;
     });
 
-    test('reuse plugin for install calls', () => {
-      let otherPlugin;
-      Gerrit.install(p => { otherPlugin = p; }, '0.1',
-          'http://test.com/plugins/testplugin/static/test.js');
-      assert.strictEqual(plugin, otherPlugin);
-    });
-
-    test('flushes preinstalls if provided', () => {
-      assert.doesNotThrow(() => {
-        Gerrit._flushPreinstalls();
-      });
-      window.Gerrit.flushPreinstalls = sandbox.stub();
-      Gerrit._flushPreinstalls();
-      assert.isTrue(window.Gerrit.flushPreinstalls.calledOnce);
-      delete window.Gerrit.flushPreinstalls;
-    });
-
     test('url', () => {
       assert.equal(plugin.url(), 'http://test.com/plugins/testplugin/');
       assert.equal(plugin.url('/static/test.js'),
@@ -313,12 +296,6 @@
       element.handleEvent(element.EventType.HIGHLIGHTJS_LOADED, {hljs: testHljs});
     });
 
-    test('versioning', () => {
-      const callback = sandbox.spy();
-      Gerrit.install(callback, '0.0pre-alpha');
-      assert(callback.notCalled);
-    });
-
     test('getAccount', done => {
       plugin.restApi().getLoggedIn().then(loggedIn => {
         assert.isTrue(loggedIn);
@@ -326,77 +303,6 @@
       });
     });
 
-    test('_setPluginsCount', done => {
-      stub('gr-reporting', {
-        pluginsLoaded() {
-          done();
-        },
-      });
-      Gerrit._setPluginsCount(0);
-    });
-
-    test('_arePluginsLoaded', () => {
-      assert.isTrue(Gerrit._arePluginsLoaded());
-      Gerrit._setPluginsCount(1);
-      assert.isFalse(Gerrit._arePluginsLoaded());
-      Gerrit._setPluginsCount(0);
-      assert.isTrue(Gerrit._arePluginsLoaded());
-    });
-
-    test('_pluginInstalled', () => {
-      const pluginsLoadedStub = sandbox.stub();
-      stub('gr-reporting', {
-        pluginsLoaded: (...args) => pluginsLoadedStub(...args),
-      });
-      const plugins = [
-        'http://test.com/plugins/foo/static/test.js',
-        'http://test.com/plugins/bar/static/test.js',
-      ];
-      Gerrit._setPluginsPending(plugins);
-      Gerrit._pluginInstalled(plugins[0]);
-      Gerrit._pluginInstalled(plugins[1]);
-      assert.isTrue(pluginsLoadedStub.calledWithExactly(['foo', 'bar']));
-    });
-
-    test('install calls _pluginInstalled', () => {
-      sandbox.stub(Gerrit, '_pluginInstalled');
-      Gerrit.install(p => { plugin = p; }, '0.1',
-          'http://test.com/plugins/testplugin/static/test.js');
-
-      // testplugin has already been installed once (in setup).
-      assert.isFalse(Gerrit._pluginInstalled.called);
-
-      // testplugin2 plugin has not yet been installed.
-      Gerrit.install(p => { plugin = p; }, '0.1',
-          'http://test.com/plugins/testplugin2/static/test.js');
-      assert.isTrue(Gerrit._pluginInstalled.calledOnce);
-    });
-
-    test('plugin install errors mark plugins as loaded', () => {
-      Gerrit._setPluginsCount(1);
-      Gerrit.install(() => {}, '0.0pre-alpha');
-      return Gerrit.awaitPluginsLoaded();
-    });
-
-    test('multiple ui plugins per java plugin', () => {
-      const file1 = 'http://test.com/plugins/qaz/static/foo.nocache.js';
-      const file2 = 'http://test.com/plugins/qaz/static/bar.js';
-      Gerrit._setPluginsPending([file1, file2]);
-      Gerrit.install(() => {}, '0.1', file1);
-      Gerrit.install(() => {}, '0.1', file2);
-      return Gerrit.awaitPluginsLoaded();
-    });
-
-    test('plugin install errors shows toasts', () => {
-      const alertStub = sandbox.stub();
-      document.addEventListener('show-alert', alertStub);
-      Gerrit._setPluginsCount(1);
-      Gerrit.install(() => {}, '0.0pre-alpha');
-      return Gerrit.awaitPluginsLoaded().then(() => {
-        assert.isTrue(alertStub.calledOnce);
-      });
-    });
-
     test('attributeHelper', () => {
       assert.isOk(plugin.attributeHelper());
     });
@@ -422,33 +328,6 @@
           element.EventType.ADMIN_MENU_LINKS);
     });
 
-    test('Gerrit._isPluginPreloaded', () => {
-      Gerrit._preloadedPlugins = {baz: ()=>{}};
-      assert.isFalse(Gerrit._isPluginPreloaded('plugins/foo/bar'));
-      assert.isFalse(Gerrit._isPluginPreloaded('http://a.com/42'));
-      assert.isTrue(Gerrit._isPluginPreloaded('preloaded:baz'));
-      Gerrit._preloadedPlugins = null;
-    });
-
-    test('preloaded plugins are installed', () => {
-      const installStub = sandbox.stub();
-      Gerrit._preloadedPlugins = {foo: installStub};
-      Gerrit._installPreloadedPlugins();
-      assert.isTrue(installStub.called);
-      const pluginApi = installStub.lastCall.args[0];
-      assert.strictEqual(pluginApi.getPluginName(), 'foo');
-    });
-
-    test('installing preloaded plugin', () => {
-      let plugin;
-      window.ASSETS_PATH = 'http://blips.com/chitz';
-      Gerrit.install(p => { plugin = p; }, '0.1', 'preloaded:foo');
-      assert.strictEqual(plugin.getPluginName(), 'foo');
-      assert.strictEqual(plugin.url('/some/thing.html'),
-          'http://blips.com/chitz/plugins/foo/some/thing.html');
-      delete window.ASSETS_PATH;
-    });
-
     suite('test plugin with base url', () => {
       let baseUrlPlugin;
 
diff --git a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-public-js-api.js b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-public-js-api.js
index 3b7b80d..d44acea 100644
--- a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-public-js-api.js
+++ b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-public-js-api.js
@@ -17,71 +17,18 @@
 (function(window) {
   'use strict';
 
-  /**
-   * Hash of loaded and installed plugins, name to Plugin object.
-   */
-  const _plugins = {};
-
-  /**
-   * Array of plugin URLs to be loaded, name to url.
-   */
-  let _pluginsPending = {};
-
-  let _pluginsInstalled = [];
-
-  let _pluginsPendingCount = -1;
-
   const PRELOADED_PROTOCOL = 'preloaded:';
 
-  const UNKNOWN_PLUGIN = 'unknown';
-
   const PANEL_ENDPOINTS_MAPPING = {
     CHANGE_SCREEN_BELOW_COMMIT_INFO_BLOCK: 'change-view-integration',
     CHANGE_SCREEN_BELOW_CHANGE_INFO_BLOCK: 'change-metadata-item',
   };
 
-  const PLUGIN_LOADING_TIMEOUT_MS = 10000;
-
-  let _restAPI;
-
-  const getRestAPI = () => {
-    if (!_restAPI) {
-      _restAPI = document.createElement('gr-rest-api-interface');
-    }
-    return _restAPI;
-  };
-
-  let _reporting;
-  const getReporting = () => {
-    if (!_reporting) {
-      _reporting = document.createElement('gr-reporting');
-    }
-    return _reporting;
-  };
-
-  // TODO (viktard): deprecate in favor of GrPluginRestApi.
-  function send(method, url, opt_callback, opt_payload) {
-    return getRestAPI().send(method, url, opt_payload).then(response => {
-      if (response.status < 200 || response.status >= 300) {
-        return response.text().then(text => {
-          if (text) {
-            return Promise.reject(text);
-          } else {
-            return Promise.reject(response.status);
-          }
-        });
-      } else {
-        return getRestAPI().getResponseObject(response);
-      }
-    }).then(response => {
-      if (opt_callback) {
-        opt_callback(response);
-      }
-      return response;
-    });
-  }
-
-  const API_VERSION = '0.1';
+  // Import utils methods
+  const {
+      getPluginNameFromUrl,
+      send,
+  } = window._apiUtils;
 
   /**
    * Plugin-provided custom components can affect content in extension
@@ -99,50 +46,6 @@
     STYLE: 'style',
   };
 
-  function flushPreinstalls() {
-    if (window.Gerrit.flushPreinstalls) {
-      window.Gerrit.flushPreinstalls();
-    }
-  }
-
-  function installPreloadedPlugins() {
-    if (!Gerrit._preloadedPlugins) { return; }
-    for (const name in Gerrit._preloadedPlugins) {
-      if (!Gerrit._preloadedPlugins.hasOwnProperty(name)) { continue; }
-      const callback = Gerrit._preloadedPlugins[name];
-      Gerrit.install(callback, API_VERSION, PRELOADED_PROTOCOL + name);
-    }
-  }
-
-  function getPluginNameFromUrl(url) {
-    if (!(url instanceof URL)) {
-      try {
-        url = new URL(url);
-      } catch (e) {
-        console.warn(e);
-        return null;
-      }
-    }
-    if (url.protocol === PRELOADED_PROTOCOL) {
-      return url.pathname;
-    }
-    const base = Gerrit.BaseUrlBehavior.getBaseUrl();
-    const pathname = url.pathname.replace(base, '');
-    // Site theme is server from predefined path.
-    if (pathname === '/static/gerrit-theme.html') {
-      return 'gerrit-theme';
-    } else if (!pathname.startsWith('/plugins')) {
-      console.warn('Plugin not being loaded from /plugins base path:',
-          url.href, '— Unable to determine name.');
-      return;
-    }
-    // Pathname should normally look like this:
-    // /plugins/PLUGINNAME/static/SCRIPTNAME.html
-    // Or, for app/samples:
-    // /plugins/PLUGINNAME.html
-    return pathname.split('/')[2].split('.')[0];
-  }
-
   function Plugin(opt_url) {
     this._domHooks = new GrDomHooksManager(this);
 
@@ -475,211 +378,5 @@
     },
   };
 
-  flushPreinstalls();
-
-  window.Gerrit = window.Gerrit || {};
-  const Gerrit = window.Gerrit;
-
-  let _resolveAllPluginsLoaded = null;
-  let _allPluginsPromise = null;
-
-  Gerrit._endpoints = new GrPluginEndpoints();
-
-  // Provide reset plugins function to clear installed plugins between tests.
-  const app = document.querySelector('#app');
-  if (!app) {
-    // No gr-app found (running tests)
-    Gerrit._installPreloadedPlugins = installPreloadedPlugins;
-    Gerrit._flushPreinstalls = flushPreinstalls;
-    Gerrit._resetPlugins = () => {
-      _allPluginsPromise = null;
-      _pluginsInstalled = [];
-      _pluginsPending = {};
-      _pluginsPendingCount = -1;
-      _reporting = null;
-      _resolveAllPluginsLoaded = null;
-      _restAPI = null;
-      Gerrit._endpoints = new GrPluginEndpoints();
-      for (const k of Object.keys(_plugins)) {
-        delete _plugins[k];
-      }
-    };
-  }
-
-  /**
-   * @deprecated Use plugin.styles().css(rulesStr) instead. Please, consult
-   * the documentation how to replace it accordingly.
-   */
-  Gerrit.css = function(rulesStr) {
-    console.warn('Gerrit.css(rulesStr) is deprecated!',
-        'Use plugin.styles().css(rulesStr)');
-    if (!Gerrit._customStyleSheet) {
-      const styleEl = document.createElement('style');
-      document.head.appendChild(styleEl);
-      Gerrit._customStyleSheet = styleEl.sheet;
-    }
-
-    const name = '__pg_js_api_class_' +
-        Gerrit._customStyleSheet.cssRules.length;
-    Gerrit._customStyleSheet.insertRule('.' + name + '{' + rulesStr + '}', 0);
-    return name;
-  };
-
-  Gerrit.install = function(callback, opt_version, opt_src) {
-    // HTML import polyfill adds __importElement pointing to the import tag.
-    const script = document.currentScript &&
-        (document.currentScript.__importElement || document.currentScript);
-
-    let src = opt_src || (script && script.src);
-    if (!src || src.startsWith('data:')) {
-      src = script && script.baseURI;
-    }
-    const name = getPluginNameFromUrl(src);
-
-    if (opt_version && opt_version !== API_VERSION) {
-      Gerrit._pluginInstallError(`Plugin ${name} install error: only version ` +
-          API_VERSION + ' is supported in PolyGerrit. ' + opt_version +
-          ' was given.');
-      return;
-    }
-
-    const existingPlugin = _plugins[name];
-    const plugin = existingPlugin || new Plugin(src);
-    try {
-      callback(plugin);
-      if (name) {
-        _plugins[name] = plugin;
-      }
-      if (!existingPlugin) {
-        Gerrit._pluginInstalled(src);
-      }
-    } catch (e) {
-      Gerrit._pluginInstallError(`${e.name}: ${e.message}`);
-    }
-  };
-
-  Gerrit.getLoggedIn = function() {
-    console.warn('Gerrit.getLoggedIn() is deprecated! ' +
-        'Use plugin.restApi().getLoggedIn()');
-    return document.createElement('gr-rest-api-interface').getLoggedIn();
-  };
-
-  Gerrit.get = function(url, callback) {
-    console.warn('.get() is deprecated! Use plugin.restApi().get()');
-    send('GET', url, callback);
-  };
-
-  Gerrit.post = function(url, payload, callback) {
-    console.warn('.post() is deprecated! Use plugin.restApi().post()');
-    send('POST', url, callback, payload);
-  };
-
-  Gerrit.put = function(url, payload, callback) {
-    console.warn('.put() is deprecated! Use plugin.restApi().put()');
-    send('PUT', url, callback, payload);
-  };
-
-  Gerrit.delete = function(url, opt_callback) {
-    console.warn('.delete() is deprecated! Use plugin.restApi().delete()');
-    return getRestAPI().send('DELETE', url).then(response => {
-      if (response.status !== 204) {
-        return response.text().then(text => {
-          if (text) {
-            return Promise.reject(text);
-          } else {
-            return Promise.reject(response.status);
-          }
-        });
-      }
-      if (opt_callback) {
-        opt_callback(response);
-      }
-      return response;
-    });
-  };
-
-  Gerrit.awaitPluginsLoaded = function() {
-    if (!_allPluginsPromise) {
-      if (Gerrit._arePluginsLoaded()) {
-        _allPluginsPromise = Promise.resolve();
-      } else {
-        let timeoutId;
-        _allPluginsPromise =
-          Promise.race([
-            new Promise(resolve => _resolveAllPluginsLoaded = resolve),
-            new Promise(resolve => timeoutId = setTimeout(
-                Gerrit._pluginLoadingTimeout, PLUGIN_LOADING_TIMEOUT_MS)),
-          ]).then(() => clearTimeout(timeoutId));
-      }
-    }
-    return _allPluginsPromise;
-  };
-
-  Gerrit._pluginLoadingTimeout = function() {
-    console.error(`Failed to load plugins: ${Object.keys(_pluginsPending)}`);
-    Gerrit._setPluginsPending([]);
-  };
-
-  Gerrit._setPluginsPending = function(plugins) {
-    _pluginsPending = plugins.reduce((o, url) => {
-      // TODO(viktard): Remove guard (@see Issue 8962)
-      o[getPluginNameFromUrl(url) || UNKNOWN_PLUGIN] = url;
-      return o;
-    }, {});
-    Gerrit._setPluginsCount(Object.keys(_pluginsPending).length);
-  };
-
-  Gerrit._setPluginsCount = function(count) {
-    _pluginsPendingCount = count;
-    if (Gerrit._arePluginsLoaded()) {
-      getReporting().pluginsLoaded(_pluginsInstalled);
-      if (_resolveAllPluginsLoaded) {
-        _resolveAllPluginsLoaded();
-      }
-    }
-  };
-
-  Gerrit._pluginInstallError = function(message) {
-    document.dispatchEvent(new CustomEvent('show-alert', {
-      detail: {
-        message: `Plugin install error: ${message}`,
-      },
-    }));
-    console.info(`Plugin install error: ${message}`);
-    Gerrit._setPluginsCount(_pluginsPendingCount - 1);
-  };
-
-  Gerrit._pluginInstalled = function(url) {
-    const name = getPluginNameFromUrl(url) || UNKNOWN_PLUGIN;
-    if (!_pluginsPending[name]) {
-      console.warn(`Unexpected plugin ${name} installed from ${url}.`);
-    } else {
-      delete _pluginsPending[name];
-      _pluginsInstalled.push(name);
-      Gerrit._setPluginsCount(_pluginsPendingCount - 1);
-      getReporting().pluginLoaded(name);
-      console.log(`Plugin ${name} installed.`);
-    }
-  };
-
-  Gerrit._arePluginsLoaded = function() {
-    return _pluginsPendingCount === 0;
-  };
-
-  Gerrit._getPluginScreenName = function(pluginName, screenName) {
-    return `${pluginName}-screen-${screenName}`;
-  };
-
-  Gerrit._isPluginPreloaded = function(url) {
-    const name = getPluginNameFromUrl(url);
-    if (name && Gerrit._preloadedPlugins) {
-      return name in Gerrit._preloadedPlugins;
-    } else {
-      return false;
-    }
-  };
-
-  // Preloaded plugins should be installed after Gerrit.install() is set,
-  // since plugin preloader substitutes Gerrit.install() temporarily.
-  installPreloadedPlugins();
+  window.Plugin = Plugin;
 })(window);
diff --git a/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-rest-api-interface.js b/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-rest-api-interface.js
index 87e4975..f0df879 100644
--- a/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-rest-api-interface.js
+++ b/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-rest-api-interface.js
@@ -442,8 +442,8 @@
     getIsGroupOwner(groupName) {
       const encodeName = encodeURIComponent(groupName);
       const req = {
-        url: `/groups/?owned&q=${encodeName}`,
-        anonymizedUrl: '/groups/owned&q=*',
+        url: `/groups/?owned&g=${encodeName}`,
+        anonymizedUrl: '/groups/owned&g=*',
       };
       return this._fetchSharedCacheURL(req)
           .then(configs => configs.hasOwnProperty(groupName));
diff --git a/polygerrit-ui/app/test/index.html b/polygerrit-ui/app/test/index.html
index 10d5aff..a0e85ef 100644
--- a/polygerrit-ui/app/test/index.html
+++ b/polygerrit-ui/app/test/index.html
@@ -188,7 +188,9 @@
     'shared/gr-js-api-interface/gr-annotation-actions-js-api_test.html',
     'shared/gr-js-api-interface/gr-change-actions-js-api_test.html',
     'shared/gr-js-api-interface/gr-change-reply-js-api_test.html',
+    'shared/gr-js-api-interface/gr-api-utils_test.html',
     'shared/gr-js-api-interface/gr-js-api-interface_test.html',
+    'shared/gr-js-api-interface/gr-gerrit_test.html',
     // TODO: uncomment file & fix tests. The file was missed in this list for a long time.
     // 'shared/gr-js-api-interface/gr-plugin-action-context_test.html',
     'shared/gr-js-api-interface/gr-plugin-endpoints_test.html',
diff --git a/resources/com/google/gerrit/server/mime/mime-types.properties b/resources/com/google/gerrit/server/mime/mime-types.properties
index 6fbd341..f12b39e 100644
--- a/resources/com/google/gerrit/server/mime/mime-types.properties
+++ b/resources/com/google/gerrit/server/mime/mime-types.properties
@@ -212,6 +212,7 @@
 star = text/x-python
 stex = text/x-stex
 sv = text/x-systemverilog
+svg = application/xml
 svh = text/x-systemverilog
 swift = text/x-swift
 tcl = text/x-tcl