code: def _get_dataset_tag(self):
      return create_dataset_tag(
          self._base_dataset._plan._dataset_name,
          self._base_dataset._uuid,
      )
  
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 7 for calling the DataIteratorImpl obj's underlying member method code with example usage: obj._get_dataset_tag() and returns: create_dataset_tag