* @return the Base64-encoded Type 3 message
     * @throws NTLMEngineException if an NTLM engine error occurs
     * @throws CrawlingAccessException if an error occurs during message generation
     */
    @Override
    public String generateType3Msg(final String username, final String password, final String domain, final String workstation,
            final String challenge) throws NTLMEngineException {

        }
        return extractorFactory;
    }

    /**
     * Creates a temporary file.
     * @param prefix The prefix string to be used in generating the file's name.
     * @param suffix The suffix string to be used in generating the file's name.
     * @param directory The directory in which the file is to be created, or null if the default temporary-file directory is to be used.

    protected final Queue<Map<String, Object>> queue = new ConcurrentLinkedQueue<>();
    /** Flag indicating if reading is finished. */
    protected final AtomicBoolean isFinished = new AtomicBoolean(false);
    /** Random number generator. */
    protected final Random random = new Random();

    /** OpenSearch client. */
    protected final Client client;
    /** Suggest settings. */
    protected final SuggestSettings settings;

        throw new CrawlerSystemException("POST method is not supported.");
    }

    /**
     * Creates a temporary file.
     * @param prefix The prefix string to be used in generating the file's name.
     * @param suffix The suffix string to be used in generating the file's name.
     * @param directory The directory in which the file is to be created, or null if the default temporary-file directory is to be used.

 *
 * <p>
 * The class is a singleton, and is injected using the {@link Resource} annotation.
 * </p>
 *
 */
public class DataServiceImpl implements DataService<AccessResultImpl<Long>> {

    /** Counter for generating unique IDs */
    protected static volatile long idCount = 0L;

    /** Lock object for synchronizing access to idCount */
    private static Object idCountLock = new Object();

 *   <li>Polling (retrieving and removing) a URL from the queue.</li>
 *   <li>Saving the session (currently a no-op).</li>
 *   <li>Checking if a URL has already been visited.</li>
 *   <li>Generating URL queues from a previous session's access results.</li>
 * </ul>
 *
 * <p>
 * The class uses synchronization to ensure thread safety when accessing and modifying the URL queue.

    /**
     * Fields that store timestamps.
     */
    protected static final String[] timestampFields = { LAST_MODIFIED, CREATE_TIME };

    /**
     * Hash function for generating IDs.
     */
    protected static final HashFunction murmur3Hash = Hashing.murmur3_128(0);

    /**
     * FesenClient instance.
     */
    @Resource
    protected volatile FesenClient fesenClient;