Generates state information for the selected containers.

        :param config_ids: List of MapConfigId tuples.
        :type config_ids: list[dockermap.map.input.MapConfigId]
        :return: Iterable of configuration states.
        :rtype: collections.Iterable[dockermap.map.state.ConfigState]

def get_states(self, config_ids):
        """
        Generates state information for the selected containers.

        :param config_ids: List of MapConfigId tuples.
        :type config_ids: list[dockermap.map.input.MapConfigId]
        :return: Iterable of configuration states.
        :rtype: collections.Iterable[dockermap.map.state.ConfigState]
        """
        return itertools.chain.from_iterable(self.generate_config_states(config_id)
                                             for config_id in config_ids)