// GET /api/admin/accesstoken
    // PUT /api/admin/accesstoken
    /**
     * Retrieves a list of access token settings.
     *
     * @param body the search body containing filter criteria
     * @return JSON response with access token list
     */
    @Execute
    public JsonResponse<ApiResult> settings(final SearchBody body) {
        validateApi(body, messages -> {});

    /**
     * Serves a thumbnail image for the specified document.
     *
     * @param form the thumbnail request form containing document ID and query parameters
     * @return ActionResponse containing the thumbnail image or 404 if not found
     */
    @Execute
    public ActionResponse index(final ThumbnailForm form) {

     *
     * @param func the callback function to build XContent
     * @param mediaType the media type for the content builder
     * @return an OutputStream containing the built content, or an empty ByteArrayOutputStream if an error occurs
     */
    public static OutputStream getXContentBuilderOutputStream(final XContentBuilderCallback func, final MediaType mediaType) {

        return asIndexHtml();
    }

    /**
     * Downloads a log file by its encoded ID.
     *
     * @param id the Base64 encoded filename of the log file to download
     * @return ActionResponse containing the log file stream
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public ActionResponse download(final String id) {

     *
     * @param <T> The type of elements in the stream.
     * @param values The elements to be included in the stream. Can be {@code null}.
     * @return A {@link StreamOf} instance containing the provided values, or an empty stream if {@code values} is {@code null}.
     */
    @SafeVarargs
    public static <T> StreamOf<T> stream(final T... values) {

     * Supports both GET and PUT requests for retrieving paginated path mapping configurations.
     *
     * @param body search parameters for filtering and pagination
     * @return JSON response containing path mapping settings list with pagination info
     */
    @Execute
    public JsonResponse<ApiResult> settings(final SearchBody body) {
        validateApi(body, messages -> {});

     * Supports both GET and PUT requests for retrieving paginated related content configurations.
     *
     * @param body search parameters for filtering and pagination
     * @return JSON response containing related content settings list with pagination info
     */
    @Execute
    public JsonResponse<ApiResult> settings(final SearchBody body) {
        validateApi(body, messages -> {});

    //                                                                      ==============

    /**
     * Retrieves the list of available log files.
     *
     * @return JSON response containing log file list
     */
    // GET /api/admin/log/files
    @Execute
    public JsonResponse<ApiResult> files() {
        final List<Map<String, Object>> list = getLogFileItems();

     * Supports both GET and PUT requests for retrieving paginated group configurations.
     *
     * @param body search parameters for filtering and pagination
     * @return JSON response containing group settings list with pagination info
     */
    @Execute
    public JsonResponse<ApiResult> settings(final SearchBody body) {
        validateApi(body, messages -> {});

  public static <E> ImmutableSet<E> of() {
    return (ImmutableSet<E>) RegularImmutableSet.EMPTY;
  }

  /**
   * Returns an immutable set containing the given element. Preferred over {@link
   * Collections#singleton} for code consistency, {@code null} rejection, and because the return
   * type conveys the immutability guarantee.
   */