code: def _shutdown_workers_and_reset_iterator(dataloader: object) -> None:
      if hasattr(dataloader, "_iterator"):
          if isinstance(
              dataloader._iterator, _MultiProcessingDataLoaderIter
          ):
              dataloader._iterator._shutdown_workers()
          dataloader._iterator = None
  
imports: import contextlib
  from collections.abc import Iterable
  from typing import Any, Callable, Dict, Iterator, List, Literal, Optional, Tuple, Type, Union
  from torch.utils.data.dataloader import _BaseDataLoaderIter, _MultiProcessingDataLoaderIter
  from typing_extensions import Self, TypedDict
  from lightning.fabric.utilities.data import sized_len
  from lightning.pytorch.utilities._pytree import _map_and_unflatten, _tree_flatten, tree_unflatten
label_desc: Use image node_id 1 for calling a global function with example usage: _shutdown_workers_and_reset_iterator(dataloader) without return types