public function setTranslationStatus(string $translation_status = "D") : CNabuDataObject
    {
        if ($translation_status === null) {
            throw new ENabuCoreException(
                    ENabuCoreException::ERROR_NULL_VALUE_NOT_ALLOWED_IN,
                    array("\$translation_status")
            );
        }
        $this->setValue('nb_site_lang_translation_status', $translation_status);
        
        return $this;
    }