code: public void readSketchMetadata(Callback<SketchMetadata> callback) {
          addCallback(BeanMessageID.BL_GET_META, callback);
          sendMessageWithoutPayload(BeanMessageID.BL_GET_META);
      }
docs: Request the sketch metadata.
  
  @param callback the callback for the {@link com.punchthrough.bean.sdk.message.SketchMetadata}
  result