code: def root(self):
      if self._root is not None:
          return self._root
      if self._parent is None:
          self._root = self
      else:
          self._root = self._parent.root
      return self._root
  
imports: import contextlib
  import functools
  import operator
  import os
  import warnings
  import threading
  from copy import deepcopy
  from typing import Union, Dict
label_desc: Use image node_id 2 for calling the AttributeDict obj's underlying member method code with example usage: obj.root() and returns: self, self