public function setPriceWithTax($price_with_tax) : CNabuDataObject
    {
        if ($price_with_tax === null) {
            throw new ENabuCoreException(
                    ENabuCoreException::ERROR_NULL_VALUE_NOT_ALLOWED_IN,
                    array("\$price_with_tax")
            );
        }
        $this->setValue('nb_commerce_product_price_with_tax', $price_with_tax);
        
        return $this;
    }