return sortOrder;
    }

    public void setSortOrder(Integer value) {
        registerModifiedProperty("sortOrder");
        this.sortOrder = value;
    }

    public Integer getTimeToLive() {
        checkSpecifiedProperty("timeToLive");
        return timeToLive;
    }

    public void setTimeToLive(Integer value) {
        registerModifiedProperty("timeToLive");

        return sortOrder;
    }

    public void setSortOrder(Integer value) {
        registerModifiedProperty("sortOrder");
        this.sortOrder = value;
    }

    public Integer getTimeToLive() {
        checkSpecifiedProperty("timeToLive");
        return timeToLive;
    }

    public void setTimeToLive(Integer value) {
        registerModifiedProperty("timeToLive");

        setupEpg(_epgMap, et -> ((FileConfig) et).getSortOrder(), (et, vl) -> ((FileConfig) et).setSortOrder(DfTypeUtil.toInteger(vl)),
                "sortOrder");
        setupEpg(_epgMap, et -> ((FileConfig) et).getTimeToLive(), (et, vl) -> ((FileConfig) et).setTimeToLive(DfTypeUtil.toInteger(vl)),
                "timeToLive");

        setupEpg(_epgMap, et -> ((WebConfig) et).getSortOrder(), (et, vl) -> ((WebConfig) et).setSortOrder(DfTypeUtil.toInteger(vl)),
                "sortOrder");
        setupEpg(_epgMap, et -> ((WebConfig) et).getTimeToLive(), (et, vl) -> ((WebConfig) et).setTimeToLive(DfTypeUtil.toInteger(vl)),
                "timeToLive");

        return asDocMeta().version();
    }

    public void setVersionNo(final Long version) {
        asDocMeta().version(version);
    }

    @Override
    public Integer getTimeToLive() {
        String value = getHandlerParameterMap().get("time_to_live");
        if (StringUtil.isBlank(value)) {
            value = getHandlerParameterMap().get("timeToLive"); // TODO remove

     */
    public Date getDocumentExpires(final CrawlingConfig config) {
        if (config != null) {
            final Integer timeToLive = config.getTimeToLive();
            if (timeToLive != null) {
                // timeToLive minutes
                final long now = ComponentUtil.getSystemHelper().getCurrentTimeAsLong();