def get_catalog_search_session(self):
raise Unimplemented()<EOL>
Gets the catalog search session.

        return: (osid.cataloging.CatalogSearchSession) - a
                ``CatalogSearchSession``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - ``supports_catalog_search()`` is
                ``false``
        *compliance: optional -- This method must be implemented if
        ``supports_catalog_search()`` is ``true``.*