final Date documentExpires = crawlingInfoHelper.getDocumentExpires(config);
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final Map<String, String> paramEnvMap = systemHelper.getFilteredEnvMap(fessConfig.getCrawlerDataEnvParamKeyPattern());
        final Map<String, String> configParamMap = config.getHandlerParameterMap().entrySet().stream().map(e -> {
            final String key = e.getKey();