public function filterByFiltertype($filtertype = null, $comparison = null)
    {
        if (null === $comparison) {
            if (is_array($filtertype)) {
                $comparison = Criteria::IN;
            } elseif (preg_match('/[\%\*]/', $filtertype)) {
                $filtertype = str_replace('*', '%', $filtertype);
                $comparison = Criteria::LIKE;
            }
        }

        return $this->addUsingAlias(SmartyFilterTableMap::FILTERTYPE, $filtertype, $comparison);
    }