docstr: Overriden to ensure the `Cache.done()` method is triggered on iteration done.
docstr_tok: ["Overriden","to","ensure","the","`","Cache.done","(",")","`","method","is","triggered","on","iteration","done","."]
code: def _get_iterator(self) -> "_BaseDataLoaderIter":
      """Overriden to ensure the `Cache.done()` method is triggered on iteration done."""
      if self.num_workers == 0:
          return _SingleProcessDataLoaderIterPatch(self)
      self.check_worker_number_rationality()
      return _MultiProcessingDataLoaderIterPatch(self)
  
imports: import asyncio
  import inspect
  import logging
  import os
  from importlib import reload
  from typing import Any, Callable, Dict, List, Optional, Union
  import torch
  from torch.utils.data import Dataset, IterableDataset
  from torch.utils.data._utils.collate import default_collate
  from torch.utils.data._utils.fetch import _BaseDatasetFetcher
  from torch.utils.data.dataloader import DataLoader, _BaseDataLoaderIter, _DatasetKind, _MultiProcessingDataLoaderIter, _SingleProcessDataLoaderIter
  from torch.utils.data.sampler import BatchSampler, Sampler
  from lightning.data.streaming import Cache
  from lightning.data.streaming.combined import CombinedStreamingDataset
  from lightning.data.streaming.constants import _DEFAULT_CHUNK_BYTES, _TORCH_GREATER_EQUAL_2_1_0, _VIZ_TRACKER_AVAILABLE
  from lightning.data.streaming.dataset import StreamingDataset
  from lightning.data.streaming.sampler import CacheBatchSampler
  from lightning.data.utilities.env import _DistributedEnv
label_desc: Use image node_id 2 for calling the CacheDataLoader obj's underlying member method code with example usage: obj._get_iterator() and returns: _MultiProcessingDataLoaderIterPatch, _SingleProcessDataLoaderIterPatch