public static function GetNewInstance($sData = null, $sLanguage = null)
    {
        $oObject = parent::GetNewInstance($sData, $sLanguage);

        if ($oObject && !empty($oObject->fieldClass)) {
            $aData = $oObject->sqlData;
            $sClassName = $aData['class'];
            $oObject = new $sClassName();
            /** @var $oInterface TCMSInterfaceManagerBase */
            $oObject->LoadFromRow($aData);
        }

        return $oObject;
    }