return updatedTime;
    }

    public void setUpdatedTime(Long value) {
        registerModifiedProperty("updatedTime");
        this.updatedTime = value;
    }

    public String getUrls() {
        checkSpecifiedProperty("urls");
        return convertEmptyToNull(urls);
    }

    public void setUrls(String value) {
        registerModifiedProperty("urls");
        this.urls = value;

        setupEpg(_epgMap, et -> ((WebConfig) et).getUpdatedTime(), (et, vl) -> ((WebConfig) et).setUpdatedTime(DfTypeUtil.toLong(vl)),
                "updatedTime");
        setupEpg(_epgMap, et -> ((WebConfig) et).getUrls(), (et, vl) -> ((WebConfig) et).setUrls(DfTypeUtil.toString(vl)), "urls");
        setupEpg(_epgMap, et -> ((WebConfig) et).getUserAgent(), (et, vl) -> ((WebConfig) et).setUserAgent(DfTypeUtil.toString(vl)),

            final Crawler crawler = ComponentUtil.getComponent(Crawler.class);
            crawler.setSessionId(sid);
            sessionIdList.add(sid);

            final String urlsStr = webConfig.getUrls();
            if (StringUtil.isBlank(urlsStr)) {
                logger.warn("[{}] No target urls. Skipped.", webConfig.getName());
                break;
            }

            // interval time