@abc.abstractmethod<EOL><INDENT>def get_locations_by_maps(self, map_ids):<DEDENT>
return<EOL>
Gets the list of ``Locations`` corresponding to a list of ``Maps``.

        :param map_ids: list of map ``Ids``
        :type map_ids: ``osid.id.IdList``
        :return: list of locations
        :rtype: ``osid.mapping.LocationList``
        :raise: ``NullArgument`` -- ``map_ids`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

        *compliance: mandatory -- This method must be implemented.*