/**
  * {@inheritdoc}
  */
 public function load(ObjectManager $manager)
 {
     $blogArticleRecords = [];
     for ($i = 0; $i < 10; ++$i) {
         $blogArticleRecords[] = ['title' => 'Article #' . ($i + 1), 'description' => 'Description of Article #' . ($i + 1), 'content' => 'Content of Article #' . ($i + 1)];
     }
     foreach ($blogArticleRecords as $blogArticleRecord) {
         $blogArticle = new BlogArticle();
         $blogArticle->setTitle($blogArticleRecord['title']);
         $blogArticle->setDescription($blogArticleRecord['description']);
         $blogArticle->setContent($blogArticleRecord['content']);
         $blogArticle->setImageUrl('');
         $blogArticle->setPublicationDate(new \DateTime());
         $manager->persist($blogArticle);
         $manager->flush();
         $this->referenceRepository->addReference('blog-article-' . $blogArticle->getId(), $blogArticle);
     }
 }