buf.append('{');

        final boolean ignoreIdleThreads = Constants.TRUE.equalsIgnoreCase(fessConfig.getCrawlerHotthreadIgnoreIdleThreads());
        final TimeValue interval = TimeValue.parseTimeValue(fessConfig.getCrawlerHotthreadInterval(), "crawler.hotthread.interval");
        final int threads = fessConfig.getCrawlerHotthreadThreadsAsInteger();
        final String timeout = fessConfig.getCrawlerHotthreadTimeout();

     * The value is, e.g. 500ms <br>
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getCrawlerHotthreadInterval();

    /**
     * Get the value for the key 'crawler.hotthread.snapshots'. <br>
     * The value is, e.g. 10 <br>