protected function getHosts(): array
    {
        $domains = [];
        foreach ($this->siteFinder->getAllSites() as $site) {
            foreach ($site->getAllLanguages() as $language) {
                $domains[] = $language->getBase()->getHost();
            }
        }
        $domains = array_unique($domains);
        sort($domains, SORT_NATURAL);
        return $domains;
    }