}

    @Override
    public void init() throws IOException {
        // nothing
    }

    @Override
    public List<String> convert(final String text, final String field, final String... lang) {
        final List<String> list = new ArrayList<>();

        final List<StringBuilder> bufList = new ArrayList<>();
        bufList.add(new StringBuilder());
        for (int i = 0; i < text.length();) {

     */
    public void addClient(final String regex, final CrawlerClient client, final int pos) {
        if (StringUtil.isBlank(regex)) {
            throw new CrawlerSystemException("A regular expression is null.");
        }
        if (client == null) {
            throw new CrawlerSystemException("CrawlerClient is null.");
        }
        int current = 0;
        boolean added = false;

    /**
     * The expiration time for the filter cache in seconds.
     */
    protected int filterCacheExpireAfterWrite = 10; // 10sec

    /**
     * The maximum number of items to load into the cache.
     */
    protected int maxLoadSize = 10000;

    /**
     * Creates a new instance of OpenSearchUrlFilterService.
     * @param crawlerConfig The crawler configuration.

    /**
     * Test thread safety of enum
     */
    public void test_threadSafety() throws Exception {
        final int threadCount = 100;
        final int iterationsPerThread = 1000;
        final Set<Exception> exceptions = new HashSet<>();

        Thread[] threads = new Thread[threadCount];
        for (int i = 0; i < threadCount; i++) {
            threads[i] = new Thread(new Runnable() {
                @Override

    }

    /**
     * Initializes the XPathAPI cache with a specified cache duration.
     * This method is called to set up the cache for XPathAPI instances.
     */
    @Resource
    public void init() {
        xpathAPICache =
                CacheBuilder.newBuilder().expireAfterAccess(cacheDuration, TimeUnit.MINUTES).build(new CacheLoader<String, XPathAPI>() {
                    @Override

    /** The last modified time of the accessed resource. */
    protected Long lastModified;

    /** The access result data. */
    protected AccessResultData<IDTYPE> accessResultData;

    @Override
    public void init(final ResponseData responseData, final ResultData resultData) {

        setCreateTime(System.currentTimeMillis());
        if (responseData != null) {
            BeanUtil.copyBeanToBean(responseData, this);
        }

     */
    public OpenSearchDataService(final String name, final String type) {
        index = name + "." + type;
    }

    /**
     * Initializes the service.
     */
    @PostConstruct
    public void init() {
        fesenClient.addOnConnectListener(() -> createMapping("data"));
    }

    /**
     * Stores an access result in the OpenSearch index.
     *
     * @param accessResult The access result to store.

    protected Map<String, QueueHolder> sessionCache = new ConcurrentHashMap<>();

    /**
     * The number of URLs to fetch when polling.
     */
    protected int pollingFetchSize = 1000;

    /**
     * The maximum size of the crawling queue.
     */
    protected int maxCrawlingQueueSize = 100;

    /**
     * Creates a new instance of OpenSearchUrlQueueService.
     * @param crawlerConfig The crawler configuration.
     */

    */
    @Override
    public synchronized void init() {
        if (httpClient != null) {
            return;
        }

        if (logger.isDebugEnabled()) {
            logger.debug("Initializing {}", HcHttpClient.class.getName());
        }

        super.init();

        // robots.txt parser

        SmbAuthentication[] auths = new SmbAuthentication[] { auth1 };
        params.put("smbAuthentications", auths);
        smbClient.setInitParameterMap(params);
        smbClient.init();

        for (int i = 0; i < 30; i++) {
            try {
                smbClient.doGet(baseUrl);
                break;
            } catch (final Exception e) {