def shutdown(self, container, instances=None, map_name=None, **kwargs):
        """
        Shut down container instances from a container configuration. Typically this means stopping and removing
        containers. Note that not all policy classes necessarily implement this method.

        :param container: Container name.
        :type container: unicode | str
        :param instances: Instance names to remove. If not specified, will remove all instances as specified in the
         configuration (or just one default instance).
        :type instances: collections.Iterable[unicode | str | NoneType]
        :param map_name: Container map name. Optional - if not provided the default map is used.
        :type map_name: unicode | str
        :param kwargs: Additional kwargs. Only options controlling policy behavior are considered.
        :return: Return values of removed containers.
        :rtype: list[dockermap.map.runner.ActionOutput]
        """
        return self.run_actions('shutdown', container, instances=instances, map_name=map_name, **kwargs)