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