def update_webhook(self, scaling_group, policy, webhook, name=None,
            metadata=None):
        """
        Updates the specified webhook. One or more of the parameters may be
        specified.
        """
        return self._manager.update_webhook(scaling_group=scaling_group,
                policy=policy, webhook=webhook, name=name, metadata=metadata)
Updates the specified webhook. One or more of the parameters may be
        specified.