Clarify some methods in the permission APIs

Change-Id: Iddf6f9b3edfedeff960ad011d2b1145336707ebd
diff --git a/java/com/google/gerrit/entities/Permission.java b/java/com/google/gerrit/entities/Permission.java
index 3f04fa5..322c79e 100644
--- a/java/com/google/gerrit/entities/Permission.java
+++ b/java/com/google/gerrit/entities/Permission.java
@@ -140,6 +140,7 @@
     return true;
   }
 
+  /** The permission name, eg. {@code Permission.SUBMIT} */
   public abstract String getName();
 
   protected abstract boolean isExclusiveGroup();
diff --git a/java/com/google/gerrit/server/project/ProjectConfig.java b/java/com/google/gerrit/server/project/ProjectConfig.java
index 89038e2..a1c48bc 100644
--- a/java/com/google/gerrit/server/project/ProjectConfig.java
+++ b/java/com/google/gerrit/server/project/ProjectConfig.java
@@ -385,6 +385,7 @@
     this.accountsSection = accountsSection;
   }
 
+  /** Returns an access section, {@code name} typically is a ref pattern. */
   public AccessSection getAccessSection(String name) {
     return accessSections.get(name);
   }