public static function getDefaultOptValue(Kwf_Component_Data $data) { $ret = $data->getBaseProperty('statistics.defaultOptValue'); if ($ret != self::OPT_IN && $ret != self::OPT_OUT) { throw new Kwf_Exception('statistics.defaultOptValue must be ' . self::OPT_IN . ' or ' . self::OPT_OUT); } return $ret; }