private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.tasks.v2beta3.HttpTarget,
            com.google.cloud.tasks.v2beta3.HttpTarget.Builder,
            com.google.cloud.tasks.v2beta3.HttpTargetOrBuilder>
        getHttpTargetFieldBuilder() {
      if (httpTargetBuilder_ == null) {
        httpTargetBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.tasks.v2beta3.HttpTarget,
                com.google.cloud.tasks.v2beta3.HttpTarget.Builder,
                com.google.cloud.tasks.v2beta3.HttpTargetOrBuilder>(
                getHttpTarget(), getParentForChildren(), isClean());
        httpTarget_ = null;
      }
      return httpTargetBuilder_;
    }
<pre>
Modifies HTTP target for HTTP tasks.
</pre>

<code>.google.cloud.tasks.v2beta3.HttpTarget http_target = 13;</code>
java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/Queue.java