protected function storeCache(array $languages, string $listIndex = null): void
    {
        $this->cache->setMulti(
            $languages,
            static function (Language $language) {
                return [
                        'ez-language-' . $language->id,
                        'ez-language-code-' . $language->languageCode,
                    ];
            },
            $listIndex
        );
    }