class_docstr: A default no-auth AuthProvider.
  
  All of the properties of this provider return None.
class_docstr_tok: ["A","default","no-auth","AuthProvider",".","All","of","the","properties","of","this","provider","return","None","."]
code: def logout_handler(self):
      return None
  
imports: from __future__ import annotations
  import logging
  import importlib.util
  from os.path import isfile
  from types import ModuleType
  from typing import TYPE_CHECKING, Awaitable, Callable, NewType
  from tornado.httputil import HTTPServerRequest
  from tornado.web import RequestHandler
  from ..util.serialization import make_globally_unique_id
label_desc: Use image node_id 7 for calling the NullAuth obj's underlying member method code with example usage: obj.logout_handler() and returns: None