code: def __repr__(self):
      return str(self)
  
imports: import logging
  import typing
  from typing import Dict, Generic, List, Optional, Union
  from fate.components.core.essential import Role, Stage
  from .artifacts._base_type import AT, MM, ArtifactDescribe, M, _ArtifactsType, _ArtifactType
label_desc: Use image node_id 6 for calling the WriterGenerator obj's underlying member method code with example usage: obj.__repr__() and returns: str