// Crawler hotthread properties - actual keys
                case "crawler.hotthread.ignore_idle_threads":
                    return "true";
                case "crawler.hotthread.interval":
                    return "500ms";
                case "crawler.hotthread.snapshots":
                    return "10";
                case "crawler.hotthread.threads":
                    return "3";

        public String expires;

        /** Interval in milliseconds for hot thread monitoring and logging. */
        @Option(name = "-h", aliases = "--hotThread", metaVar = "hotThread", usage = "Interval for Hot Thread logging")
        public Integer hotThread;

        /**
         * Default constructor for Options.
         * Protected to allow subclassing while preventing direct instantiation.
         */

        buf.append("[HOTTHREAD MONITOR] ");

        final FessConfig fessConfig = ComponentUtil.getFessConfig();

        buf.append('{');

        final boolean ignoreIdleThreads = Constants.TRUE.equalsIgnoreCase(fessConfig.getCrawlerHotthreadIgnoreIdleThreads());
        final TimeValue interval = TimeValue.parseTimeValue(fessConfig.getCrawlerHotthreadInterval(), "crawler.hotthread.interval");

    }

    // Test hotThread setter
    @Test
    public void test_hotThread() {
        int testInterval = 60;
        CrawlJob result = crawlJob.hotThread(testInterval);
        assertEquals(testInterval, crawlJob.hotThreadInterval);
        assertSame(crawlJob, result);

        // Test with disabled value
        result = crawlJob.hotThread(-1);

        options.fileConfigIds = "file1";
        options.dataConfigIds = "data1";
        options.propertiesPath = "/path/to/props";
        options.expires = "7";
        options.hotThread = 5000;

        String result = options.toString();
        assertNotNull(result);
        assertTrue(result.contains("sessionId=session123"));
        assertTrue(result.contains("name=testCrawl"));

     *
     * @param hotThreadInterval monitoring interval in seconds, -1 to disable
     * @return this CrawlJob instance for method chaining
     */
    public CrawlJob hotThread(final int hotThreadInterval) {
        this.hotThreadInterval = hotThreadInterval;
        return this;
    }

    @Override
    public String execute() {
        //   check # of crawler processes

crawler.hotthread.ignore_idle_threads=true
# Interval for hot thread monitoring (e.g., 500ms).
crawler.hotthread.interval=500ms
# Number of snapshots for hot thread monitoring.
crawler.hotthread.snapshots=10
# Number of threads for hot thread monitoring.
crawler.hotthread.threads=3
# Timeout for hot thread monitoring (e.g., 30s).
crawler.hotthread.timeout=30s

    String CRAWLER_HOTTHREAD_ignore_idle_threads = "crawler.hotthread.ignore_idle_threads";

    /** The key of the configuration. e.g. 500ms */
    String CRAWLER_HOTTHREAD_INTERVAL = "crawler.hotthread.interval";

    /** The key of the configuration. e.g. 10 */
    String CRAWLER_HOTTHREAD_SNAPSHOTS = "crawler.hotthread.snapshots";

    /** The key of the configuration. e.g. 3 */