protected function _getResultFieldLength()
    {
        if (null !== $this->resultFieldLength) {
            return $this->resultFieldLength;
        }

        if (null !== self::$staticResultFieldLength) {
            $this->resultFieldLength = self::$staticResultFieldLength;
            return $this->resultFieldLength;
        }

        $model = new \MUtil_Model_TableModel('gems__tokens');
        self::$staticResultFieldLength = $model->get('gto_result', 'maxlength');
        $this->resultFieldLength = self::$staticResultFieldLength;

        return $this->resultFieldLength;
    }