// Test createTask method (requires FessConfig)
        generator = new TestThumbnailGenerator();
        Map<String, Object> docMap = new HashMap<>();
        docMap.put("id", "doc123");

        // Since createTask depends on FessConfig, it may not work properly
        // in unit tests without full container
        try {
            generator.createTask("/path/to/thumb.jpg", docMap);

        emptyGenerator.setName("empty");
        String path = "/path/to/thumbnail.jpg";

        // Since createTask requires FessConfig, it may not work properly
        // We test that the method can be called without throwing exceptions
        try {
            emptyGenerator.createTask(path, docMap);
        } catch (Exception e) {
            // Expected when FessConfig is not available
        }
    }

     * @param path The path to the source document.
     * @param docMap The document map containing metadata.
     * @return A tuple containing task information.
     */
    Tuple3<String, String, String> createTask(String path, Map<String, Object> docMap);