code: def get_extra_docstrings(functions=None):
      if functions is None:
          functions = get_functions()
      return {
          key: val.extra_doc
          for key, val in functions.items()
          if val.extra_doc
      }
  
label_desc: Use image node_id 2 for calling a global function with example usage: get_extra_docstrings(functions) and returns: unknown