Newscoop\Subscription\SubscriptionData::addArticle PHP Method

    public function addArticle(ArticleEntity $article, $language)
    {
        $article = new \Newscoop\Subscription\Article($this->subscription, $article);
        $article->setStartDate($this->startDate);
        $article->setDays($this->days);
        $article->setPaidDays($this->paidDays);
        $article->setLanguage($language);
        $this->articles[$article->getArticleNumber()] = $article;
    }