Facebook\InstantArticles\Transformer\Rules\ImageRule::apply PHP Method

    public function apply($transformer, $context, $node)
    {
        $image = Image::create();
        if (Type::is($context, InstantArticle::getClassName())) {
            $instant_article = $context;
        } elseif ($transformer->getInstantArticle()) {
            $instant_article = $transformer->getInstantArticle();
            $context->disableEmptyValidation();
            $context = Paragraph::create();
            $context->disableEmptyValidation();
        } else {
            $transformer->addWarning(new NoRootInstantArticleFoundWarning(null, $node));
            return $context;
        }
        // Builds the image
        $url = $this->getProperty(self::PROPERTY_IMAGE_URL, $node);
        if ($url) {
            $image->withURL($url);
            $instant_article->addChild($image);
            if ($instant_article !== $context) {
                $instant_article->addChild($context);
            }
        } else {
            $transformer->addWarning(new InvalidSelector(self::PROPERTY_IMAGE_URL, $instant_article, $node, $this));
        }
        if ($this->getProperty(Image::ASPECT_FIT, $node)) {
            $image->withPresentation(Image::ASPECT_FIT);
        } elseif ($this->getProperty(Image::ASPECT_FIT_ONLY, $node)) {
            $image->withPresentation(Image::ASPECT_FIT_ONLY);
        } elseif ($this->getProperty(Image::FULLSCREEN, $node)) {
            $image->withPresentation(Image::FULLSCREEN);
        } elseif ($this->getProperty(Image::NON_INTERACTIVE, $node)) {
            $image->withPresentation(Image::NON_INTERACTIVE);
        }
        if ($this->getProperty(self::PROPERTY_LIKE, $node)) {
            $image->enableLike();
        }
        if ($this->getProperty(self::PROPERTY_COMMENTS, $node)) {
            $image->enableComments();
        }
        $suppress_warnings = $transformer->suppress_warnings;
        $transformer->suppress_warnings = true;
        $transformer->transform($image, $node);
        $transformer->suppress_warnings = $suppress_warnings;
        return $context;
    }