*/
    public void addClickLog(final ClickLog clickLog) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        if (clickLogQueue.size() > fessConfig.getLoggingClickMaxQueueSizeAsInteger()) {
            logger.warn("[{}] The click log queue size is too large. Skipped the click log: {} {}", clickLog);
            return;
        }
        clickLogQueue.add(clickLog);
    }