code: public JsonNode getDataAttrs() {
          Lock lock = lockForRead();
          try {
              if (dataJson == null || dataJson instanceof NullNode
                      || dataJson instanceof MissingNode) {
                  return null;
              }
              return dataJson.deepCopy();
          } finally {
              lock.unlock();
          }
      }
docs: Get the "data" field as a {@link JsonNode}.
  
  @return
  @since 0.10.0