code: private void returnMetadata(Buffer buffer) {
          Callback<SketchMetadata> callback = getFirstCallback(BeanMessageID.BL_GET_META);
          if (callback != null) {
              callback.onResult(SketchMetadata.fromPayload(buffer));
          }
      }
docs: Call the onResult callback for {@link com.punchthrough.bean.sdk.Bean#readSketchMetadata(com.punchthrough.bean.sdk.message.Callback)} (com.punchthrough.bean.sdk.message.Callback)}.
  @param buffer Raw message bytes from the Bean