assertEquals("^FESS_ENV_.*", fessConfig.getCrawlerDataEnvParamKeyPattern());
    }

    public void test_crawlerHotthreadIgnoreIdleThreads() {
        assertTrue(fessConfig.isCrawlerHotthreadIgnoreIdleThreads());
    }

    public void test_crawlerHotthreadInterval() {
        assertEquals("500ms", fessConfig.getCrawlerHotthreadInterval());
    }

    public void test_crawlerHotthreadSnapshots() {

     * comment: Whether to ignore idle threads in hot thread monitoring.
     * @return The determination, true or false. (if not found, exception but basically no way)
     */
    boolean isCrawlerHotthreadIgnoreIdleThreads();

    /**
     * Get the value for the key 'crawler.hotthread.interval'. <br>
     * The value is, e.g. 500ms <br>
     * comment: Interval for hot thread monitoring (e.g., 500ms).