public function apply($transformer, $instant_article, $node)
{
$related_articles = RelatedArticles::create();
// Builds the image
$title = $this->getProperty(self::PROPERTY_TITLE, $node);
if ($title) {
$related_articles->withTitle($title);
$instant_article->addChild($related_articles);
}
$transformer->transform($related_articles, $node);
return $instant_article;
}
/**
* Sets the related articles within the footer of the article.
*
* @param RelatedArticles $related_articles - The related articles
*
* @return $this
*/
public function withRelatedArticles($related_articles)
{
Type::enforce($related_articles, RelatedArticles::getClassName());
$this->relatedArticles = $related_articles;
return $this;
}
/**
* Adds new child elements to the front of this InstantArticle
*
* @param Element to be added to this Article.
*
* @return $this
*/
public function unshiftChild($child)
{
Type::enforce($child, [Ad::getClassName(), Analytics::getClassName(), AnimatedGIF::getClassName(), Audio::getClassName(), Blockquote::getClassName(), Image::getClassName(), H1::getClassName(), H2::getClassName(), Interactive::getClassName(), ListElement::getClassName(), Map::getClassName(), Paragraph::getClassName(), Pullquote::getClassName(), RelatedArticles::getClassName(), Slideshow::getClassName(), SocialEmbed::getClassName(), Video::getClassName()]);
array_unshift($this->children, $child);
return $this;
}
public function getContextClass()
{
return RelatedArticles::getClassName();
}
