code: def setvalue(self, value):
      if self._warn and not self._warned:
          self._warned = True
          warnings.warn(self._warn)
      conf = self._parent.root
      for it in self._items[:-1]:
          conf = getattr(conf, it)
      setattr(conf, self._items[-1], value)
  
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 4 for calling the Redirection obj's underlying member method code with example usage: obj.setvalue(value) without return types