@abc.abstractmethod<EOL><INDENT>def get_asset_spatial_session_for_repository(self, repository_id):<DEDENT>
return<EOL>
Gets the session for retrieving spatial coverage of an asset for the given repository.

        :param repository_id: the ``Id`` of the repository
        :type repository_id: ``osid.id.Id``
        :return: an ``AssetSpatialSession``
        :rtype: ``osid.repository.AssetSpatialSession``
        :raise: ``NotFound`` -- ``repository_id`` not found
        :raise: ``NullArgument`` -- ``repository_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``Unimplemented`` -- ``supports_asset_spatial()`` or ``supports_visible_federation()`` is ``false``

        *compliance: optional -- This method must be implemented if
        ``supports_asset_spatial()`` and
        ``supports_visible_federation()`` are ``true``.*