code: def regist(self, name, reader):
      assert (
          reader.__base__ == DataReader
      ), "Unknow model type {}".format(type(reader))
      self.reader_zoo[name] = reader
  
file_path: PaddleHub/modules/video/classification/videotag_tsn_lstm/resource/reader/reader_utils.py
label_desc: Use image node_id 2 for calling the ReaderZoo obj's underlying member method code with example usage: obj.regist(name, reader) without return types