private static final Logger log = LoggerFactory.getLogger(WitnessClient.class);

    // Polling and backoff constants (in ms)
    private static final long MAX_POLL_INTERVAL = 5000; // Normal polling: max 5 seconds
    private static final long MAX_ERROR_BACKOFF = 30000; // Error polling: max 30 seconds
    private static final long BASE_POLL_INTERVAL = 1000;
    private static final long BASE_ERROR_DELAY = 1000;

        final boolean eoled = isEoled();
        runtime.registerData("eoled", eoled);
        if (eoled) {
            final String eolLink = fessConfig.getOnlineHelpEol();
            runtime.registerData("eolLink", getHelpUrl(eolLink));
        }
    }

    /**
     * Sets up search HTML data for a given action.
     *
     * @param action  The action to set up data for.

            crawler.getCrawlerContext().setNumOfThread(numOfThread);
            final String sessionId = crawler.execute();

            // Wait for crawler to start running with polling
            long startTime = System.currentTimeMillis();
            while (crawler.crawlerContext.getStatus() != CrawlerStatus.RUNNING && System.currentTimeMillis() - startTime < 5000) {
                try {

                    // 2. Wait for response
                    // 3. Process changes
                    // 4. Notify the lease manager

                    // Use adaptive polling interval based on activity
                    long pollInterval = determinePollInterval(handle);
                    Thread.sleep(pollInterval);

                    // Check if still active

					<c:if test="${eoled}">
						<li class="nav-item" data-bs-toggle="tooltip" data-placement="left" title="<la:message key="labels.eol_error" />">
							<a class="nav-link active" href="${eolLink}" target="_olh"><em class="fas fa-times-circle text-danger"></a>
						</li>
					</c:if>
					<c:if test="${developmentMode}">
						<li class="nav-item" data-bs-toggle="tooltip" data-placement="left"

         */
        protected Queue<OpenSearchUrlQueue> crawlingQueue = new ConcurrentLinkedQueue<>();
    }

    /**
     * Sets the polling fetch size.
     * @param pollingFetchSize The polling fetch size.
     */
    public void setPollingFetchSize(final int pollingFetchSize) {
        this.pollingFetchSize = pollingFetchSize;
    }

    /**

					<c:if test="${eoled}">
						<li class="nav-item" data-bs-toggle="tooltip" data-placement="left" title="<la:message key="labels.eol_error" />">
							<a class="nav-link active" href="${eolLink}" target="_olh"><i class="fas fa-times-circle text-danger" aria-hidden="true"></i></a>
						</li>
					</c:if>
					<c:if test="${developmentMode}">
						<li class="nav-item" data-bs-toggle="tooltip" data-placement="left"

	</ul>
	<ul class="navbar-nav ml-auto">
		<c:if test="${eoled}">
		<li class="nav-item" data-toggle="tooltip" data-placement="left"
			title="<la:message key="labels.eol_error" />">
			<a class="nav-link active" href="${eolLink}" target="_olh"><i class="fas fa-times-circle text-danger" aria-hidden="true"></i></a></li>
		</c:if>
		<c:if test="${developmentMode}">
			<li class="nav-item" data-toggle="tooltip" data-placement="left"

						<ul class="nav navbar-nav">
							<c:if test="${eoled}">
								<li class="nav-item" data-bs-toggle="tooltip" data-placement="left" title="<la:message key="labels.eol_error" />">
									<a class="nav-link active" href="${eolLink}" target="_olh"><i class="fas fa-times-circle text-danger" aria-hidden="true"></i></a>
								</li>
							</c:if>
							<c:if test="${developmentMode}">

 *   <li>Deleting URL queues associated with a session.</li>
 *   <li>Deleting all URL queues.</li>
 *   <li>Offering a list of URLs to the queue, ensuring duplicates are not added.</li>
 *   <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>