public com.google.api.HttpBodyOrBuilder getHttpBodyOrBuilder() {
      if (httpBodyBuilder_ != null) {
        return httpBodyBuilder_.getMessageOrBuilder();
      } else {
        return httpBody_ == null ? com.google.api.HttpBody.getDefaultInstance() : httpBody_;
      }
    }
<pre>
The http body contains the queue.yaml file which used to update queue lists
</pre>

<code>optional .google.api.HttpBody http_body = 2;</code>
java-tasks/proto-google-cloud-tasks-v2beta2/src/main/java/com/google/cloud/tasks/v2beta2/UploadQueueYamlRequest.java