PubSub: Update region tags to standard

Author: alixhami

google-cloud-examples/src/main/java/com/google/cloud/examples/pubsub/snippets/SubscriberSnippets.java

@@ -100,7 +100,7 @@ public void failed(Subscriber.State from, Throwable failure) {
   }
 
   private void createSubscriber() throws Exception {
-    // [START pubsub_pull]
+    // [START pubsub_subscriber_async_pull]
     String projectId = "my-project-id";
     String subscriptionId = "my-subscription-id";
 
@@ -129,7 +129,7 @@ public void receiveMessage(PubsubMessage message, AckReplyConsumer consumer) {
         subscriber.stopAsync();
       }
     }
-    // [END pubsub_pull]
+    // [END pubsub_subscriber_async_pull]
   }
 
   private Subscriber createSubscriberWithErrorListener(Subscriber subscriber) throws Exception {
@@ -190,7 +190,7 @@ private Subscriber createSubscriberWithCustomCredentials() throws Exception {
 
   static List<ReceivedMessage> createSubscriberWithSyncPull(
       String projectId, String subscriptionId, int numOfMessages) throws Exception {
-    // [START subscriber_sync_pull]
+    // [START pubsub_subscriber_sync_pull]
     SubscriberStubSettings subscriberStubSettings =
         SubscriberStubSettings.newBuilder().build();
     try (SubscriberStub subscriber = GrpcSubscriberStub.create(subscriberStubSettings)) {
@@ -223,6 +223,6 @@ static List<ReceivedMessage> createSubscriberWithSyncPull(
       subscriber.acknowledgeCallable().call(acknowledgeRequest);
       return pullResponse.getReceivedMessagesList();
     }
-    // [END subscriber_sync_pull]
+    // [END pubsub_subscriber_sync_pull]
   }
 }