protected function getTranslationNode(NodeInterface $parentNode, $locale, $create = true)
    {
        $name = Translation::LOCALE_NAMESPACE.":$locale";
        if (!$parentNode->hasNode($name)) {
            if (!$create) {
                return false;
            }
            $node = $parentNode->addNode($name);
        } else {
            $node = $parentNode->getNode($name);
        }

        return $node;
    }