public function getLanguageName(string $languageCode): string
    {
        $posixLanguageCode = $this->localeConverter->convertToPOSIX($languageCode);
        if ($posixLanguageCode === null) {
            return '';
        }

        $posixLanguageCode = mb_substr($posixLanguageCode, 0, 2);
        $languageName = Intl::getLanguageBundle()->getLanguageName($posixLanguageCode, null, $posixLanguageCode);

        return ucwords($languageName);
    }