CountDownLatch endLatch = new CountDownLatch(threadCount);
        AtomicInteger successCount = new AtomicInteger(0);
        List<Exception> exceptions = Collections.synchronizedList(new ArrayList<>());

        // When - Multiple threads accessing trees concurrently
        for (int t = 0; t < threadCount; t++) {
            final int threadId = t;
            executor.submit(() -> {

        final int threadCount = 10;
        final int operationsPerThread = 100;
        final ExecutorService executor = Executors.newFixedThreadPool(threadCount);

        final List<Long> timings = Collections.synchronizedList(new ArrayList<>());

        try {
            for (int t = 0; t < threadCount; t++) {
                executor.submit(() -> {
                    for (int i = 0; i < operationsPerThread; i++) {

     */
    protected int crawlerPriority = Thread.NORM_PRIORITY;

    /**
     * Synchronized list of active crawlers.
     */
    protected final List<Crawler> crawlerList = Collections.synchronizedList(new ArrayList<>());

    /**
     * Initiates crawling for specified web and file configurations.
     *
     * @param sessionId The session ID for this crawling operation

    /**
     * Thread-safe list of active data crawling threads.
     * Used to track and manage all currently running crawler threads.
     */
    protected final List<DataCrawlingThread> dataCrawlingThreadList = Collections.synchronizedList(new ArrayList<>());

    /**
     * Creates a new instance of DataIndexHelper.
     * This constructor initializes the helper for managing data crawling operations,

      )
    }
    val request =
      Request
        .Builder()
        .url(webServer.url("/"))
        .build()
    val attempts = CountDownLatch(20)
    val webSockets = Collections.synchronizedList(ArrayList<WebSocket>())
    val reconnectOnFailure: WebSocketListener =
      object : WebSocketListener() {
        override fun onFailure(
          webSocket: WebSocket,
          t: Throwable,