code: def is_available(self) -> bool:
      return self in _current_available
  
file_path: datasets/tensorflow_datasets/core/visibility.py
imports: import contextlib
  import enum
  import pathlib
  from typing import Iterable, Iterator, List
  from absl import app
label_desc: Use image node_id 1 for calling the DatasetType obj's underlying member method code with example usage: obj.is_available() and returns: unknown