@java.lang.Override
    public com.google.cloud.tasks.v2beta2.PullTargetOrBuilder getPullTargetOrBuilder() {
      if ((targetTypeCase_ == 4) && (pullTargetBuilder_ != null)) {
        return pullTargetBuilder_.getMessageOrBuilder();
      } else {
        if (targetTypeCase_ == 4) {
          return (com.google.cloud.tasks.v2beta2.PullTarget) targetType_;
        }
        return com.google.cloud.tasks.v2beta2.PullTarget.getDefaultInstance();
      }
    }
<pre>
Pull target.

A pull queue is a queue that has a
[PullTarget][google.cloud.tasks.v2beta2.PullTarget].
</pre>

<code>.google.cloud.tasks.v2beta2.PullTarget pull_target = 4;</code>
java-tasks/proto-google-cloud-tasks-v2beta2/src/main/java/com/google/cloud/tasks/v2beta2/Queue.java