code: private void appendClassId(JMessage<?> message) {
          writer.appendln("@Override")
                .appendln("public int getClassId() {")
                .begin()
                //TODO: Need to add method to create a constant for the description or struct here.
                .formatln("return %s.%s;",
                          getHazelcastFactory(message.descriptor()),
                          getHazelcastClassId(message.descriptor()))
                .end()
                .appendln("}")
                .newline();
      }
docs: Method to append get class id from hazelcast_portable.
  
  @param message JMessage with the information.
  <pre>
  {@code
  public int getClassId() {
  return ContentCmsPortableFactory.CREATE_CONTENT_ID;
  }
  }
  </pre>