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
import org.codelibs.fess.suggest.index.contents.document.ESSourceReader;

            infoField.setAccessible(true);
            infoField.set(response, info);
        } catch (Exception e) {
            fail("Failed to set info field: " + e.getMessage());
        }
    }

    private void setDataCount(Trans2QueryFSInformationResponse response, int dataCount) {
        // Use the public setDataCount method from SmbComTransactionResponse

                logger.warn("Ignoring incompatible plugin version {}:", version, e);
            } else {
                logger.warn("Ignoring incompatible plugin version {}: {}", version, e.getMessage());
            }
            return false;
        }

        return true;
    }

    private void mergeMetadata(
            RepositorySystemSession session,
            RequestTrace trace,

        // single project build entry point
        Exception ex = assertThrows(Exception.class, () -> projectBuilder.build(pomFile, configuration));
        assertTrue(ex.getMessage().contains("Received non-all-whitespace CHARACTERS or CDATA event"));

        // multi projects build entry point
        ProjectBuildingException pex = assertThrows(
                ProjectBuildingException.class,

    }

    private ProjectBuildingException transformError(ProjectBuildingException e) {
        if (e.getCause() instanceof ModelBuildingException) {
            return new InvalidProjectModelException(e.getProjectId(), e.getMessage(), e.getPomFile());
        }

        return e;
    }

    @Override
    public MavenProject build(File pom, ProjectBuilderConfiguration configuration) throws ProjectBuildingException {

            md4.update(password.getBytes(SmbConstants.UNI_ENCODING));
            return md4.digest();
        } catch (final UnsupportedEncodingException uee) {
            throw new RuntimeException(uee.getMessage());
        }
    }

    /**
     * Generates the NTOWFv2 hash for the given domain, username, and password.
     *
     * @param domain the authentication domain
     * @param username the username

    }

    boolean hasCapability(final int cap) throws SmbException {
        try {
            connect(RESPONSE_TIMEOUT);
        } catch (final IOException ioe) {
            throw new SmbException(ioe.getMessage(), ioe);
        }
        return (capabilities & cap) == cap;
    }

    boolean isSignatureSetupRequired(final NtlmPasswordAuthentication auth) {

        CIFSException exception = assertThrows(CIFSException.class, () -> {
            response.getInfo(FileInternalInfo.class);
        });

        assertEquals("Incompatible file information class", exception.getMessage());
    }

    @Test
    @DisplayName("Test writeSetupWireFormat returns 0")
    void testWriteSetupWireFormat() {

                        } catch (InterpolationException e) {
                            problems.add(new ModelProblemCollectorRequest(Severity.ERROR, Version.BASE)
                                    .setMessage(e.getMessage())
                                    .setException(e));
                        }
                        cache.put(value, c);
                    }
                    return c;
                }

        printErrors(
                context,
                context.options().showErrors().orElse(false),
                List.of(new Logger.Entry(Logger.Level.ERROR, e.getMessage(), e.getCause())),
                context.logger);
        return new InvokerException.ExitException(2);
    }