options.numOfThreads = 1;
        options.cleanup = false;

        // Setup mock components
        setupMockComponents();

        Method processMethod = ThumbnailGenerator.class.getDeclaredMethod("process", ThumbnailGenerator.Options.class);
        processMethod.setAccessible(true);

        try {
            Integer result = (Integer) processMethod.invoke(null, options);
            assertNotNull(result);

        // Use reflection to access private method for testing
        Exception exception = assertThrows(Exception.class, () -> {
            java.lang.reflect.Method method =
                    MultiChannelManager.class.getDeclaredMethod("createChannelTransport", InetAddress.class, InetAddress.class);
            method.setAccessible(true);
            method.invoke(multiChannelManager, null, null);
        });

     */
    @Test
    public void test_processDirectMemberOf_methodExists() throws Exception {
        Method method = EntraIdAuthenticator.class.getDeclaredMethod("processDirectMemberOf", EntraIdUser.class, List.class, List.class,
                List.class, String.class);
        assertNotNull(method, "processDirectMemberOf method should exist");
    }

    /**

        Method setReceivedMethod = ServerMessageBlock2Response.class.getDeclaredMethod("received");
        setReceivedMethod.setAccessible(true);
        setReceivedMethod.invoke(response);

        // Set tree ID
        Method setTreeIdMethod = ServerMessageBlock2.class.getDeclaredMethod("setTreeId", int.class);
        setTreeIdMethod.setAccessible(true);

        void testMakePipeUrl_NoOptions() throws Exception {
            DcerpcPipeHandle handle = createMockedDcerpcPipeHandle();

            Method makePipeUrlMethod = DcerpcPipeHandle.class.getDeclaredMethod("makePipeUrl");
            makePipeUrlMethod.setAccessible(true);
            String result = (String) makePipeUrlMethod.invoke(handle);

            assertEquals("smb://server/IPC$/test", result);
        }

  public <T> void testCaptureTypeParameter() throws Exception {
    TypeVariable<?> variable = new TypeParameter<T>() {}.typeVariable;
    TypeVariable<?> expected =
        TypeParameterTest.class.getDeclaredMethod("testCaptureTypeParameter")
            .getTypeParameters()[0];
    assertEquals(expected, variable);
  }

  public void testConcreteTypeRejected() {

        final Suggester suggester = Suggester.builder().build(client, "test");

        // Use reflection to access private method
        final Method method = Suggester.class.getDeclaredMethod("getIndicesForAlias", String.class);
        method.setAccessible(true);
        final List<String> indices = (List<String>) method.invoke(suggester, aliasName);

        Method writeParameterWords = clazz.getDeclaredMethod("writeParameterWordsWireFormat", byte[].class, int.class);
        assertNotNull(writeParameterWords);

        Method writeBytes = clazz.getDeclaredMethod("writeBytesWireFormat", byte[].class, int.class);
        assertNotNull(writeBytes);

        Method readParameterWords = clazz.getDeclaredMethod("readParameterWordsWireFormat", byte[].class, int.class);

    assertFalse(
        Visibility.PUBLIC.isVisible(VisibilityMethods.class.getDeclaredMethod("privateMethod")));
    assertFalse(
        Visibility.PUBLIC.isVisible(
            VisibilityMethods.class.getDeclaredMethod("packagePrivateMethod")));
    assertFalse(
        Visibility.PUBLIC.isVisible(VisibilityMethods.class.getDeclaredMethod("protectedMethod")));
    assertTrue(

        fessConfigField.set(action, ComponentUtil.getFessConfig());

        // Call registerExtraFields via reflection
        final java.lang.reflect.Method method = AdminSearchlistAction.class.getDeclaredMethod("registerExtraFields", RenderData.class);
        method.setAccessible(true);

        final RenderData renderData = new RenderData();
        method.invoke(action, renderData);