code: def __repr__(self) -> str:
      return f"DataIterator({self._base_dataset})"
  
file_path: ray/python/ray/data/_internal/iterator/iterator_impl.py
imports: from typing import TYPE_CHECKING, Iterator, Optional, Tuple, Union
  from ray.data._internal.stats import DatasetStats
  from ray.data._internal.util import create_dataset_tag
  from ray.data.block import Block, BlockMetadata
  from ray.data.iterator import DataIterator
  from ray.types import ObjectRef
label_desc: Use image node_id 2 for calling the DataIteratorImpl obj's underlying member method code with example usage: obj.__repr__() and returns: str, self, str