public Builder clearAppEngineRouting() {
      bitField0_ = (bitField0_ & ~0x00000002);
      appEngineRouting_ = null;
      if (appEngineRoutingBuilder_ != null) {
        appEngineRoutingBuilder_.dispose();
        appEngineRoutingBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
Task-level setting for App Engine routing.

* If [app_engine_routing_override is set on the
  queue][google.cloud.tasks.v2.Queue.app_engine_routing_override], this
  value is used for all tasks in the queue, no matter what the setting is
  for the [task-level
  app_engine_routing][google.cloud.tasks.v2.AppEngineHttpRequest.app_engine_routing].
</pre>

<code>.google.cloud.tasks.v2.AppEngineRouting app_engine_routing = 2;</code>
java-tasks/proto-google-cloud-tasks-v2/src/main/java/com/google/cloud/tasks/v2/AppEngineHttpRequest.java