@abc.abstractmethod<EOL><INDENT>def is_adjacent(self, location_id, another_location_id):<DEDENT>
return<EOL>
Tests if two locations of the same type are adjacent.

        A location is not adjacent if contained within another location.

        :param location_id: the given location ``Id``
        :type location_id: ``osid.id.Id``
        :param another_location_id: the given location ``Id``
        :type another_location_id: ``osid.id.Id``
        :return: ``true`` of the locations are adjacent, ``false`` otherwise
        :rtype: ``boolean``
        :raise: ``NotFound`` -- ``location_id`` or ``another_location_id`` is not found
        :raise: ``NullArgument`` -- ``location_id`` or ``another_location_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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