public function update($id, $text)
    {
        $translation = $this->find($id);
        if (!$translation || $translation->isLocked()) {
            return false;
        }
        $translation->text = $text;
        $saved             = $translation->save();
        if ($saved && $translation->locale === $this->defaultLocale) {
            $this->flagAsUnstable($translation->namespace, $translation->group, $translation->item);
        }
        return $saved;
    }