@Test
    public void test_throwAndCatch() {
        // Test throwing and catching the exception
        String errorMessage = "LDAP server not reachable";

        try {
            throw new LdapConfigurationException(errorMessage);
        } catch (LdapConfigurationException e) {
            assertEquals(errorMessage, e.getMessage());
            assertNull(e.getCause());
        } catch (Exception e) {

        final List<VaMessenger<FessMessages>> errorMessages = new ArrayList<>();
        AdminSearchlistAction.validateFields(doc, errorMessages::add);

        assertFalse(errorMessages.isEmpty());

        // Verify error messages use field names without doc. prefix
        final FessMessages messages = new FessMessages();
        errorMessages.forEach(m -> m.message(messages));

    @Test
    public void test_constructor_withServletException() {
        // Create a ServletException with a message
        String errorMessage = "Test servlet error message";
        ServletException servletException = new ServletException(errorMessage);

        // Wrap it in ServletRuntimeException
        ServletRuntimeException runtimeException = new ServletRuntimeException(servletException);

            var errorMessage = config.labels.error;
            try {
                var data = JSON.parse(e.data);
                if (data.errorCode && config.labels.errors && config.labels.errors[data.errorCode]) {
                    errorMessage = config.labels.errors[data.errorCode];
                } else if (data.message) {
                    errorMessage = data.message;
                }

        }
        final String errorMessage = longMessage.toString();

        // Create mock SearchEngineClient that throws exception with long message
        searchEngineClient = new SearchEngineClient() {
            @Override
            public long deleteByQuery(String index, QueryBuilder query) {
                throw new RuntimeException(errorMessage);
            }
        };

      AbstractFuture<String> future = new AbstractFuture<String>() {};
      AtomicReference<String> errorMessage = Atomics.newReference();
      executor.execute(
          () -> {
            future.set("success");
            if (!future.isDone()) {
              errorMessage.set("Set call exited before future was complete.");
            }
          });
      executor.execute(
          () -> {

      AbstractFuture<String> future = new AbstractFuture<String>() {};
      AtomicReference<String> errorMessage = Atomics.newReference();
      executor.execute(
          () -> {
            future.set("success");
            if (!future.isDone()) {
              errorMessage.set("Set call exited before future was complete.");
            }
          });
      executor.execute(
          () -> {

    try {
      new NullPointerTester().testMethod(bar, method);
    } catch (AssertionError incorrectError) {
      String errorMessage =
          rootLocaleFormat("Should not have flagged method %s for %s", method.getName(), bar);
      assertWithMessage(errorMessage).that(incorrectError).isNull();
    }
  }

  public void verifyBarFail(Method method, TwoArg bar) {
    try {

* Add documentation to the User Manual and DSL Reference (under [platforms/documentation/docs/src/docs](platforms/documentation/docs/src/docs/)).
* For error messages related changes, follow the [ErrorMessages Guide](contributing/ErrorMessages.md).
* Add Javadoc for new methods and classes, following the [Javadoc Style Guide](contributing/JavadocStyleGuide.md). Javadoc is *required* for new public, top-level types.