final int intervalTime =
                    webConfig.getIntervalTime() != null ? webConfig.getIntervalTime() : Constants.DEFAULT_INTERVAL_TIME_FOR_WEB;
            ((FessIntervalController) crawler.getIntervalController()).setDelayMillisForWaitingNewUrl(intervalTime);

            final String includedUrlsStr = webConfig.getIncludedUrls() != null ? webConfig.getIncludedUrls() : StringUtil.EMPTY;