docs: def send(self, data, room=None, skip_sid=None, namespace=None,
               callback=None):
          """Send a message to the server.
  
          The only difference with the :func:`socketio.Client.send` method is
          that when the ``namespace`` argument is not given the namespace
          associated with the class is used.
          """
          return self.client.send(data, namespace=namespace or self.namespace,
                                  callback=callback)