public function setOrder(int $order) : CNabuDataObject
    {
        if ($order === null) {
            throw new ENabuCoreException(
                    ENabuCoreException::ERROR_NULL_VALUE_NOT_ALLOWED_IN,
                    array("\$order")
            );
        }
        $this->setValue('nb_site_target_section_order', $order);
        
        return $this;
    }