}

    public static RankFusionProcessor getRankFusionProcessor() {
        return getComponent(RANK_FUSION_PROCESSOR);
    }

    public static ProtocolHelper getProtocolHelper() {
        return getComponent(PROTOCOL_HELPER);
    }

    @SuppressWarnings("unchecked")
    public static <T> T getComponent(final Class<T> clazz) {
        try {

        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        ComponentUtil.getFessConfig();
        final ProtocolHelper protocolHelper = ComponentUtil.getProtocolHelper();

        final long startTime = systemHelper.getCurrentTimeAsLong();

        final List<String> sessionIdList = new ArrayList<>();
        crawlerList.clear();