}

  /**
   * Creates a <i>mutable</i> {@code CompactLinkedHashSet} instance containing the elements of the
   * given collection in the order returned by the collection's iterator.
   *
   * @param collection the elements that the set should contain
   * @return a new {@code CompactLinkedHashSet} containing those elements (minus duplicates)
   */
  public static <E extends @Nullable Object> CompactLinkedHashSet<E> create(

  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.
   */

    /**
     * The file that is used to cache the content.
     */
    private final File file;

    /**
     * Constructs a ContentCache with the given byte array data.
     *
     * @param data the byte array containing the content
     * @throws IllegalArgumentException if data is null
     */
    public ContentCache(final byte[] data) {
        if (data == null) {
            throw new IllegalArgumentException("data must not be null");

     * @param fid the file identifier
     * @param offset the file offset at which to write
     * @param remaining the number of bytes remaining to be written
     * @param b the data buffer containing bytes to write
     * @param off the offset in the buffer where data starts
     * @param len the number of bytes to write
     */

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

    /**
     * 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();

    @Nonnull
    Path getPomPath();

    /**
     * Returns the project base directory, i.e. the directory containing the project.
     * A project is usually read from the file system and this will point to
     * the directory containing the POM file.
     *
     * @return the path of the directory containing the project
     */
    @Nonnull
    Path getBasedir();

    /**

    }

    /**
     * Finds a login user by username.
     *
     * @param username the username to search for
     * @return an optional entity containing the found user, or empty if not found
     */
    @Override
    protected OptionalEntity<FessUser> doFindLoginUser(final String username) {
        return userBhv.selectEntity(cb -> {

        assertFalse(responseData.isNoFollow());
    }

    public void test_processWithResponseDataContainingBody() {
        // Test process with ResponseData containing body
        NullResponseProcessor processor = new NullResponseProcessor();
        ResponseData responseData = new ResponseData();

        byte[] content = "Test content".getBytes();

     * 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 -> {});