response.getItems().forEach(item -> 
            System.out.println("Async suggestion: " + item.getText()[0])
        );
    })
    .error(throwable -> {
        // Handle error
        System.err.println("Error: " + throwable.getMessage());
    });
```

## Advanced Usage

### Index from Existing Documents

```java

      notifyStopped();
    }
  }

  /** This is never thrown but only used for logging. */
  private static final class EmptyServiceManagerWarning extends Throwable {}

  private static final class FailedService extends Throwable {
    FailedService(Service service) {
      super(
          service.toString(),
          service.failureCause(),
          false /* don't enable suppression */,

        assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);
    }

    @Test
    public void test_serialVersionUID() {
        // Test that exception is serializable
        String message = "Serialization test";

     * @param severity the error severity
     * @param category the error category
     * @param cause the cause exception
     */
    public SmbException(String message, int errorCode, Severity severity, Category category, Throwable cause) {
        super(message, cause);
        this.errorCode = errorCode;
        this.severity = severity;
        this.category = category;
        this.context = new HashMap<>();

        }
    }

    @Test
    @DisplayName("Should pass null for SmbAuthException when error is not SmbAuthException")
    void testRenewCredentials_WithErrorNotSmbAuthException() {
        Throwable genericError = new RuntimeException("Generic Error");
        try (MockedStatic<NtlmAuthenticator> mockedNtlmAuthenticator = mockStatic(NtlmAuthenticator.class)) {

        /**
         * Create exception with cause
         *
         * @param message error message
         * @param cause underlying cause
         */
        public NoAvailableChannelException(String message, Throwable cause) {
            super(message, cause);
        }
    }

        assertNotNull(details);
        assertTrue(details.contains("Total: 1 event(s)"));
        assertTrue(details.contains("Something went wrong"));
        // Throwable is no longer included in summary-oriented format
        // Only log message is shown per event line
    }

    @Test
    public void test_formatDetails_emptyList() {

            return null;
        }

        @Override
        public void log(String msg) {
        }

        @Override
        public void log(String message, Throwable throwable) {
        }

        @Override
        public String getServerInfo() {
            return null;
        }

        @Override
        public String getInitParameter(String name) {

            final ReactorContext buildContext,
            final MavenSession rootSession,
            final MavenSession currentSession,
            final MavenProject mavenProject,
            Throwable t,
            final Instant buildStartTime) {
        // record the error and mark the project as failed
        Instant buildEndTime = MonotonicClock.now();
        buildContext.getResult().addException(t);

        verify(delegate, times(1)).release();
    }

    @Test
    @DisplayName("finalize() invokes checkRelease exactly once")
    void finalize_invokes_checkRelease() throws Throwable {
        // Arrange: spy to verify internal interaction with checkRelease()
        CIFSContext ctx = mock(CIFSContext.class);
        SmbTreeConnectionTrace trace = Mockito.spy(new SmbTreeConnectionTrace(ctx));