public static Coder<PublishResult> defaultPublishResult() {
    return new PublishResultCoder(null, null);
  }
@Test
  public void testDefaultPublishResultDecodeEncodeEquals() throws Exception {
    CoderProperties.coderDecodeEncodeEqual(
        PublishResultCoders.defaultPublishResult(),
        new PublishResult().withMessageId(UUID.randomUUID().toString()));
  }