task.getDocumentationFiles().from(extension.getUserManual().getRoot());
            task.getDocumentationRoot().convention(extension.getUserManual().getRoot());
            task.getDestinationDirectory().convention(layout.getBuildDirectory().dir("tmp/" + task.getName()));
        });

 */
public abstract class UserManual {
    /**
     * The root of the user manual documentation.  This is the source of the adoc files.
     */
    public abstract DirectoryProperty getRoot();

    /**
     * Source of snippets that can be inserted into the user manual
     */
    public abstract DirectoryProperty getSnippets();

    /**

     */
    protected Path buildFilePath(final String exportPath, final String url, final IndexExportFormatter formatter) {
        try {
            final URI uri = new URI(url);
            String host = uri.getHost();
            String path = uri.getPath();

            if (host == null || host.isEmpty()) {
                host = "_local";
            }

            if (path == null || path.isEmpty()) {

            value = "http:" + urlStr;
        } else {
            value = urlStr;
        }
        try {
            final URL url = new URL(value);
            final String host = url.getHost();
            if (StringUtil.isBlank(host) || "http".equalsIgnoreCase(host) || "https".equalsIgnoreCase(host)) {
                return false;
            }
        } catch (final MalformedURLException e) {