protected function _getPlaceholder($placeholder = null)
    {
        $ret = $this->_getSetting('placeholder');
        if ($placeholder) {
            return $this->getData()->trlStaticExecute($ret[$placeholder]);
        }
        foreach ($ret as $k => $v) {
            $ret[$k] = $this->getData()->trlStaticExecute($v);
        }
        return $ret;
    }