@abc.abstractmethod<EOL><INDENT>def get_catalogs_by_query(self, catalog_query):<DEDENT>
return<EOL>
Gets a list of ``Catalogs`` matching the given catalog query.

        :param catalog_query: the catalog query
        :type catalog_query: ``osid.cataloging.CatalogQuery``
        :return: the returned ``CatalogList``
        :rtype: ``osid.cataloging.CatalogList``
        :raise: ``NullArgument`` -- ``catalog_query`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure
        :raise: ``Unsupported`` -- ``catalog_query`` is not of this service

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