private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.tasks.v2beta2.Queue,
            com.google.cloud.tasks.v2beta2.Queue.Builder,
            com.google.cloud.tasks.v2beta2.QueueOrBuilder>
        getQueueFieldBuilder() {
      if (queueBuilder_ == null) {
        queueBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.tasks.v2beta2.Queue,
                com.google.cloud.tasks.v2beta2.Queue.Builder,
                com.google.cloud.tasks.v2beta2.QueueOrBuilder>(
                getQueue(), getParentForChildren(), isClean());
        queue_ = null;
      }
      return queueBuilder_;
    }
<pre>
Required. The queue to create.

[Queue's name][google.cloud.tasks.v2beta2.Queue.name] cannot be the same as
an existing queue.
</pre>

<code>.google.cloud.tasks.v2beta2.Queue queue = 2 [(.google.api.field_behavior) = REQUIRED];
</code>
java-tasks/proto-google-cloud-tasks-v2beta2/src/main/java/com/google/cloud/tasks/v2beta2/CreateQueueRequest.java