code: def with_value(self, key, val):
          ''' Return a copy of the AuthContext object with the given key and
          value added.
          '''
          new_dict = dict(self._dict)
          new_dict[key] = val
          return AuthContext(new_dictf with_value(self, key, val):
          ''' Return a copy of the AuthContext object with the given key and
          value added.
          '''
          new_dict = dict(self._dict)
          new_dict[key] = val
          return AuthContext(new_dict)
docs: Return a copy of the AuthContext object with the given key and
          value added.