private final Pattern samplesLinkWithHashPattern = Pattern.compile("([a-zA-Z_0-9-.]*)(#(.*))?");

    @InputDirectory
    @PathSensitive(PathSensitivity.RELATIVE)
    public abstract DirectoryProperty getDocumentationRoot();

    @Optional @InputDirectory
    @PathSensitive(PathSensitivity.RELATIVE)
    public abstract DirectoryProperty getSamplesRoot();

    @InputDirectory
    @PathSensitive(PathSensitivity.RELATIVE)

        TaskProvider<GenerateDocInfo> generateDocinfo = tasks.register("generateDocInfo", GenerateDocInfo.class, task -> {
            task.getDocumentationFiles().from(extension.getUserManual().getRoot());
            task.getDocumentationRoot().convention(extension.getUserManual().getRoot());
            task.getDestinationDirectory().convention(layout.getBuildDirectory().dir("tmp/" + task.getName()));
        });