Adapt to Branch.NameKey refactoring

Change-Id: I25cd674ee547516ded9ead7d523ae2c138bdaec8
diff --git a/src/main/java/com/googlesource/gerrit/plugins/webhooks/rest/PermissionsImpl.java b/src/main/java/com/googlesource/gerrit/plugins/webhooks/rest/PermissionsImpl.java
index 7f99366..6d438ed 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/webhooks/rest/PermissionsImpl.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/webhooks/rest/PermissionsImpl.java
@@ -50,7 +50,7 @@
   private boolean can(Project.NameKey project, RefPermission permission) {
     return permissionBackend
         .user(currentUser.get())
-        .ref(new Branch.NameKey(project, REFS_CONFIG))
+        .ref(Branch.nameKey(project, REFS_CONFIG))
         .testOrFalse(permission);
   }
 }