class_docstr: IOBase
class_docstr_tok: ["IOBase"]
code: def data_type(self):
      return self._data_type
  
file_path: towhee/towhee/serve/io/base.py
imports: from typing import Any
  from abc import ABC, abstractmethod
  from enum import Enum, auto
label_desc: Use image node_id 6 for calling the IOBase obj's underlying member method code with example usage: obj.data_type() and returns: self