DocumentNode example

foreach ($config->getAttributeSanitizers() as $attributeSanitizer) {
            foreach ($attributeSanitizer->getSupportedElements() ?? ['*'] as $element) {
                foreach ($attributeSanitizer->getSupportedAttributes() ?? ['*'] as $attribute) {
                    $this->attributeSanitizers[$element][$attribute][] = $attributeSanitizer;
                }
            }
        }
    }

    public function visit(\DOMDocumentFragment $domNode): ?NodeInterface
    {
        $cursor = new Cursor(new DocumentNode());
        $this->visitChildren($domNode, $cursor);

        return $cursor->node;
    }

    private function visitNode(\DOMNode $domNode, Cursor $cursor): void
    {
        $nodeName = StringSanitizer::htmlLower($domNode->nodeName);

        // Element should be dropped, including its children         if (!\array_key_exists($nodeName, $this->elementsConfig)) {