public static function fetchList( $offset = false, $limit = false, $asObject = true )
    {
        return eZPersistentObject::fetchObjectList( self::definition(),
                                                    null,
                                                    null,
                                                    null,
                                                    array( 'offset' => $offset, 'length' => $limit ),
                                                    $asObject );
    }