code: public void serializeId( JsonWriter writer, JsonSerializationContext ctx ) {
          serializer.serialize( writer, id, ctx );
      }
docs: <p>serializeId</p>
  
  @param writer a {@link com.github.nmorel.gwtjackson.client.stream.JsonWriter} object.
  @param ctx a {@link com.github.nmorel.gwtjackson.client.JsonSerializationContext} object.