code: def update(self, list_id, webhook_id, data):
          
          self.list_id = list_id
          self.webhook_id = webhook_id
          return self._mc_client._patch(url=self._build_path(list_id, 'webhooks', webhook_id), data=data)
docs: Update the settings for an existing webhook.
  
          :param list_id: The unique id for the list
          :type list_id: :py:class:`str`
          :param webhook_id: The unique id for the webhook
          :type webhook_id: :py:class:`str`