protected function _addFuzzy($add, &$temp)
    {
        if ($add) {
            if (!$temp['exts']->query('SEARCH', 'FUZZY')) {
                throw new Horde_Imap_Client_Exception_NoSupportExtension('SEARCH=FUZZY');
            }
            $temp['cmds']->add('FUZZY');
            $temp['exts_used'][] = 'SEARCH=FUZZY';
        }
    }