class TokenVisitor {
        void onStartHtmlElement(String name) {
        }

        void onHtmlElementAttribute(String name, String value) {
        }

        void onStartHtmlElementComplete(String name) {
        }

        void onEndHtmlElement(String name) {
        }

        void onStartJavadocTag(String name) {
        }

        void onEndJavadocTag(String name) {
        }

        }

        @Override
        public void onHtmlElementAttribute(String name, String value) {
            attributes.put(name, value);
        }

        @Override
        public void onStartHtmlElementComplete(String name) {
            if (name.equals("li")) {
                unwindTo(Arrays.asList("ul", "ol"), visitor);
            } else if (name.equals("dt") || name.endsWith("dd")) {

        }

        @Override
        void onHtmlElementAttribute(String name, String value) {
            attributes.put(name, value);
        }

        @Override
        void onStartHtmlElementComplete(String name) {
            for (HtmlElementHandler handler : elementHandlers) {
                if (handler.onStartElement(name, attributes)) {
                    handlerStack.addFirst(handler);

            visitor.onHtmlElementAttribute(attrName, attrValue.toString());
            scanner.next();
            scanner.skip(WHITESPACE_WITH_EOL);
        }

        if (!isEnd) {
            visitor.onStartHtmlElementComplete(elementName);
        }

        // end element marker
        if (scanner.lookingAt('/')) {
            visitor.onEndHtmlElement(elementName);
        }
        scanner.skip(END_ELEMENT);
    }