public Builder setPullTarget(com.google.cloud.tasks.v2beta2.PullTarget value) {
      if (pullTargetBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        targetType_ = value;
        onChanged();
      } else {
        pullTargetBuilder_.setMessage(value);
      }
      targetTypeCase_ = 4;
      return this;
    }
<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