code: def list_imported_builders() -> List[str]:
      """Returns the string names of all `tfds.core.DatasetBuilder`s."""
      all_builders = [
          builder_name
          for builder_name, builder_cls in _DATASET_REGISTRY.items()
          if _is_builder_available(builder_cls)
      ] + list(
          _get_existing_dataset_packages(
              constants.DATASETS_TFDS_SRC_DIR
          )
      )
      return sorted(all_builders)
  
imports: import abc
  import collections
  import contextlib
  import functools
  import importlib
  import inspect
  import os.path
  from typing import ClassVar, Dict, Iterator, List, Type, Text, Tuple
  from etils import epath
  from tensorflow_datasets.core import constants
  from tensorflow_datasets.core import naming
  from tensorflow_datasets.core import visibility
  from tensorflow_datasets.core.utils import py_utils
  from tensorflow_datasets.core.utils import resource_utils
label_desc: Use image node_id 6 for calling a global function with example usage: list_imported_builders() and returns: sorted