code: def get_inheritable_header(obj) -> Optional[str]:
      return getattr(obj, _INHERITABLE_HEADER, None)
  
file_path: tensorflow-upstream/tensorflow/tools/docs/doc_controls.py
imports: from typing import Optional, TypeVar
label_desc: Use image node_id 3 for calling a global function with example usage: get_inheritable_header(obj) and returns: getattr