in src/Facebook/InstantArticles/Transformer/Rules/RelatedItemRule.php [46:70]
public function apply($transformer, $related_articles, $node)
{
$related_item = RelatedItem::create();
$related_articles->addRelated($related_item);
$url = $this->getProperty(self::PROPERTY_URL, $node);
if ($url) {
$related_item->withURL($url);
} else {
$transformer->addWarning(
new InvalidSelector(
self::PROPERTY_URL,
$related_articles,
$node,
$this
)
);
}
if ($this->getProperty(self::PROPERTY_SPONSORED, $node)) {
$related_item->enableSponsored();
}
return $related_articles;
}