code: def document(obj, doc):
      """Adds a docstring to typealias by overriding the `__doc__` attribute.
  
      Note: Overriding `__doc__` is only possible after python 3.7.
  
      Args:
        obj: Typealias object that needs to be documented.
        doc: Docstring of the typealias. It should follow the standard pystyle
          docstring rules.
      """
      try:
          obj.__doc__ = doc
      except AttributeError:
          _EXTRA_DOCS[id(obj)] = doc
  
label_desc: Use image node_id 1 for calling a global function with example usage: document(obj, doc) without return types