public static function getIndirectChildComponentClasses($class, $select = array())
    {
        if (is_array($select)) {
            $select = new Kwf_Component_Select($select);
        }
        $cacheId = $select->getHash();
        $ret = self::_getIndirectChildComponentClasses($class, $select, $cacheId);
        return $ret;
    }