code: def _gen_invalid_iterdatapipe_msg(datapipe):
      return (
          "This iterator has been invalidated because another iterator has been created "
          f"from the same IterDataPipe: {_generate_iterdatapipe_msg(datapipe)}\n"
          "This may be caused multiple references to the same IterDataPipe. We recommend "
          "using `.fork()` if that is necessary."
      )
  
file_path: pytorch/torch/utils/data/datapipes/_hook_iterator.py
imports: import inspect
  import functools
  from enum import Enum
  import torch.autograd
label_desc: Use image node_id 5 for calling a global function with example usage: _gen_invalid_iterdatapipe_msg(datapipe) and returns: str, _generate_iterdatapipe_msg, str