code: def logout(self):
          
          self.client.global_sign_out(
              AccessToken=self.access_token
          )
  
          self.id_token = None
          self.refresh_token = None
          self.access_token = None
          self.token_type = None
docs: Logs the user out of all clients and removes the expires_in,
          expires_datetime, id_token, refresh_token, access_token, and token_type
          attributes
          :return: