protected function _assignParentDependFields()
    {
        $sParent = $this->getParentArticle();
        if ($sParent) {
            foreach ($this->_getCopyParentFields() as $sField) {
                $this->$sField = new \OxidEsales\Eshop\Core\Field($sParent->$sField->value);
            }
        }
    }