private function createPublisher($name, $url, $locale)
    {
        $publisher = new Publisher();
        $publisher
            ->setCurrentLocale(mb_substr($locale, 0, 2, 'UTF-8'))
            ->setName($name)
            ->setEmail('publisher@example.com')
            ->setAddress('-')
            ->setPhone('-')
            ->setUrl($url);
        $this->em->persist($publisher);
        return $publisher;
    }