// 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.
         */

    }

    // Test hotThread setter
    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);
        assertEquals(-1, crawlJob.hotThreadInterval);

        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