@abc.abstractmethod<EOL><INDENT>def get_adjacent_locations(self, location_id, hops):<DEDENT>
return<EOL>
Gets a list of adjacent locations for the given location.

        The adjacent locations reflect the locations at the same level
        of the location hierarchy.

        :param location_id: the given location ``Id``
        :type location_id: ``osid.id.Id``
        :param hops: the number of hops to include. 0 returns an empty list. 1 returns the immediate adjacent locations.
        :type hops: ``cardinal``
        :return: a list of locations
        :rtype: ``osid.mapping.LocationList``
        :raise: ``NotFound`` -- ``location_id`` is not found
        :raise: ``NullArgument`` -- ``location_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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