eZ\Publish\Core\FieldType\RichText\Converter\Render\Template::processTag PHP Method

    protected function processTag(DOMDocument $document, DOMElement $tag)
    {
        $content = null;
        $tagName = $tag->getAttribute('name');
        $parameters = array('name' => $tagName, 'params' => $this->extractConfiguration($tag));
        if ($tag->getElementsByTagName('ezcontent')->length > 0) {
            $parameters['content'] = $this->saveNodeXML($tag->getElementsByTagName('ezcontent')->item(0));
        }
        if ($tag->hasAttribute('xlink:align')) {
            $parameters['align'] = $tag->getAttribute('xlink:align');
        }
        $content = $this->renderer->renderTag($tagName, $parameters, $tag->localName === 'eztemplateinline');
        if (isset($content)) {
            // If current tag is wrapped inside another template tag we can't use CDATA section
            // for its content as these can't be nested.
            // CDATA section will be used only for content of root wrapping tag, content of tags
            // inside it will be added as XML fragments.
            if ($this->isWrapped($tag)) {
                $fragment = $document->createDocumentFragment();
                $fragment->appendXML($content);
                $tag->parentNode->replaceChild($fragment, $tag);
            } else {
                $payload = $document->createElement('ezpayload');
                $payload->appendChild($document->createCDATASection($content));
                $tag->appendChild($payload);
            }
        }
    }