para.appendChild(document.createTextNode(String.format("Note: This %s is ", type)));
            Element link = document.createElement("ulink");
            para.appendChild(link);
            link.setAttribute("url", "../userguide/feature_lifecycle.html");
            link.appendChild(document.createTextNode("incubating"));

        Document document = parent.getOwnerDocument();

        Element summarySection = document.createElement("section");
        parent.appendChild(summarySection);

        Element title = document.createElement("title");
        summarySection.appendChild(title);
        title.appendChild(document.createTextNode("Methods"));

        Collection<MethodDoc> classMethods = classDoc.getClassMethods();

            listener.warning(String.format("Unsupported Javadoc tag '%s'", tag));
            Element element = document.createElement("UNHANDLED-TAG");
            element.appendChild(document.createTextNode(String.format("{@%s %s}", tag, value)));
            nodes.appendChild(element);
            return true;
        }
    }

    private static class UnknownHtmlElementHandler implements HtmlElementHandler {

        parent.appendChild(section);

        Element title = document.createElement("title");
        section.appendChild(title);
        title.appendChild(document.createTextNode("Methods added by the "));
        Element literal = document.createElement("literal");
        title.appendChild(literal);
        literal.appendChild(document.createTextNode(extension.getPluginId()));

        parent.appendChild(thead);
        Element tr = document.createElement("tr");
        thead.appendChild(tr);
        Element td = document.createElement("td");
        tr.appendChild(td);
        td.appendChild(document.createTextNode("Block"));
        td = document.createElement("td");
        tr.appendChild(td);
        td.appendChild(document.createTextNode("Description"));

        parent.appendChild(section);
        section.setAttribute("id", propertyDoc.getId());
        section.setAttribute("role", "detail");

        Element title = document.createElement("title");
        section.appendChild(title);
        title.appendChild(linkRenderer.link(propertyDoc.getMetaData().getType(), listener));
        title.appendChild(document.createTextNode(" "));

        parent.appendChild(section);
        section.setAttribute("id", methodDoc.getId());
        section.setAttribute("role", "detail");

        Element title = document.createElement("title");
        section.appendChild(title);
        title.appendChild(linkRenderer.link(methodDoc.getMetaData().getReturnType(), listener));
        title.appendChild(document.createTextNode(" "));

        Document document = parent.getOwnerDocument();

        Element summarySection = document.createElement("section");
        parent.appendChild(summarySection);

        Element title = document.createElement("title");
        summarySection.appendChild(title);
        title.appendChild(document.createTextNode("Script blocks"));

        Collection<BlockDoc> classBlocks = classDoc.getClassBlocks();
        if (!classBlocks.isEmpty()) {

            @Override
            public void visitText(String text) {
                linkElement.appendChild(document.createTextNode(text));
            }

            @Override
            public void visitType(String name) {
                linkElement.appendChild(addType(name, listener));
            }
        });

        linkElement.normalize();

        }
    }

    def addVersionInfo(Document doc) {
        Element releaseInfo = doc.createElement('releaseinfo')
        releaseInfo.appendChild(doc.createTextNode(version.get().toString()))
        doc.documentElement.bookinfo[0]?.appendChild(releaseInfo)
    }

    def fixProgramListings(Document doc) {