docs: def get_disconnect_message(self, code: int):
          '''
          http://channels.readthedocs.io/en/stable/asgi/www.html#disconnection
          '''
          self.order += 1
          return {
              'channel': 'websocket.disconnect',
              'reply_channel': None,
              'path': self.path,
              'order': self.order,
              'code': code,
          }