Newscoop\NewscoopBundle\Services\TopicService::detachTopicFromArticle PHP Метод

    protected function detachTopicFromArticle(Topic $topic, Article $article)
    {
        $result = $article->removeTopic($topic);
        if ($result) {
            $this->em->flush();
            $this->dispatcher->dispatch('article-topic.detach', new GenericEvent($this, $this->getLogArray($topic, $article)));
        }
        return $result;
    }