@abc.abstractmethod<EOL><INDENT>def get_assets_by_location(self, location_id):<DEDENT>
return<EOL>
Gets a list of assets included within the given spatial coverage.

        :param location_id: a location ``Id``
        :type location_id: ``osid.id.Id``
        :return: a list of assets
        :rtype: ``osid.repository.AssetList``
        :raise: ``NullArgument`` -- ``location_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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