@java.lang.Override
    public com.google.cloud.tasks.v2beta3.AppEngineHttpQueueOrBuilder
        getAppEngineHttpQueueOrBuilder() {
      if ((queueTypeCase_ == 3) && (appEngineHttpQueueBuilder_ != null)) {
        return appEngineHttpQueueBuilder_.getMessageOrBuilder();
      } else {
        if (queueTypeCase_ == 3) {
          return (com.google.cloud.tasks.v2beta3.AppEngineHttpQueue) queueType_;
        }
        return com.google.cloud.tasks.v2beta3.AppEngineHttpQueue.getDefaultInstance();
      }
    }
<pre>
[AppEngineHttpQueue][google.cloud.tasks.v2beta3.AppEngineHttpQueue]
settings apply only to [App Engine
tasks][google.cloud.tasks.v2beta3.AppEngineHttpRequest] in this queue.
[Http tasks][google.cloud.tasks.v2beta3.HttpRequest] are not affected by
this proto.
</pre>

<code>.google.cloud.tasks.v2beta3.AppEngineHttpQueue app_engine_http_queue = 3;</code>
java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/Queue.java