final Document document;

    DocBookBuilder(Document document) {
        this.document = document;
        stack.addFirst(document.createElement("root"));
    }

    List<Element> getElements() {
        List<Element> elements = new ArrayList<Element>();
        for (Node node = stack.getLast().getFirstChild(); node != null; node = node.getNextSibling()) {
            elements.add((Element) node);
        }

        handler.add(new UnknownHtmlElementHandler(nodes, document, listener));

        lexer.visit(handler);

        return new DocCommentImpl(nodes.getElements());
    }

    private static class DocCommentImpl implements DocComment {
        private final List<Element> nodes;

        public DocCommentImpl(List<Element> nodes) {
            this.nodes = nodes;