*/
  @SuppressWarnings("unchecked")
  public static <B> ImmutableClassToInstanceMap<B> of() {
    return (ImmutableClassToInstanceMap<B>) EMPTY;
  }

  /**
   * Returns an {@code ImmutableClassToInstanceMap} containing a single entry.
   *
   * @since 19.0
   */
  public static <B, T extends B> ImmutableClassToInstanceMap<B> of(Class<T> type, T value) {
    return new ImmutableClassToInstanceMap<>(ImmutableMap.of(type, value));
  }

   */
  @SuppressWarnings("unchecked")
  public static <K, V> ImmutableMap<K, V> of() {
    return (ImmutableMap<K, V>) RegularImmutableMap.EMPTY;
  }

  /**
   * Returns an immutable map containing a single entry. This map behaves and performs comparably to
   * {@link Collections#singletonMap} but will not accept a null key or value. It is preferable
   * mainly for consistency and maintainability of your code.
   */

        return asListHtml(this::saveToken);
    }

    /**
     * Processes uploaded search request files and executes them against the search engine.
     *
     * @param form the upload form containing the request file
     * @return action response with the search results or error page
     */
    @Execute
    @Secured({ ROLE })
    public ActionResponse upload(final UploadForm form) {

     * and processes child URLs discovered during crawling.
     *
     * @param paramMap the data store parameters containing crawling configuration
     * @param dataMap the data map containing the document information including the URL
     */
    protected void addDocument(final DataStoreParams paramMap, final Map<String, Object> dataMap) {

     * Extracts geo.{field}.point and geo.{field}.distance parameters to create
     * geo-distance queries for each configured geographic field.
     *
     * @param request the HTTP servlet request containing geographic parameters
     * @throws InvalidQueryException if geo point format is invalid or parsing fails
     */
    public GeoInfo(final HttpServletRequest request) {

     *
     * @param buf buffer containing data to send
     * @param off offset in the buffer
     * @param length length of data to send
     * @throws IOException if an I/O error occurs
     */
    void send(byte[] buf, int off, int length) throws IOException;

    /**
     * Performs a transaction on the pipe.
     *
     * @param buf the buffer containing the transaction data

     * @param source A hint about the source of the problem like a file path, may be {@code null}.
     * @param lineNumber The one-based index of the line containing the problem or {@code -1} if unknown.
     * @param columnNumber The one-based index of the column containing the problem or {@code -1} if unknown.
     * @param exception The exception that caused this problem, may be {@code null}.
     */
    public DefaultSettingsProblem(

        assertNotNull(result, "getAnchorSet should not return null for valid list");
        assertEquals(3, result.size());
    }

    /**
     * Test getAnchorSet with list containing nulls
     */
    @Test
    public void test_getAnchorSet_withListContainingNulls() {
        FessCrawlerThread crawlerThread = new FessCrawlerThread();

        List<String> urls = new ArrayList<>();

 * <li>{@code classDocbookDir} - A directory that should contain docbook template for each class referenced in main docbook template.</li>
 * </ul>
 *
 * Produces the following:
 * <ul>
 * <li>A docbook book XML file containing the reference.</li>

        assertEquals("Job[name=\"Test & Job\", id='<123>']", exception.getMessage());
    }

    @Test
    public void test_constructorWithString_specialCharacters() {
        // Test with message containing special characters
        String message = "Job not found: \"My Job\" with params: {id=123, type='test'}";

        JobNotFoundException exception = new JobNotFoundException(message);