task.getSourceFile().convention(dslReference.getRoot().file("dsl.xml"));
            task.getPluginsMetaDataFile().convention(dslReference.getRoot().file("plugins.xml"));
            task.getClassDocbookDirectory().convention(dslReference.getRoot());
            task.getClassMetaDataFile().convention(dslMetaData.flatMap(ExtractDslMetaDataTask::getDestinationFile));

            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();

    /**

 */
public abstract class DslReference {
    /**
     * The root of the DSL documentation.  This is the source of the DSL XML currently.
     */
    public abstract DirectoryProperty getRoot();

    /**
     * The stylesheet directory used by the DSL reference documentation.
     */
    public abstract DirectoryProperty getStylesheetDirectory();

    /**