code: def _get_token_from_file() -> Optional[str]:
      try:
          return _clean_token(Path(constants.HF_TOKEN_PATH).read_text())
      except FileNotFoundError:
          return None
  
file_path: hub-client/src/huggingface_hub/utils/_token.py
imports: import os
  import warnings
  from pathlib import Path
  from threading import Lock
  from typing import Optional
  from ..None import constants
  from ._runtime import is_google_colab
label_desc: Use image node_id 4 for calling a global function with example usage: _get_token_from_file() and returns: _clean_token, None