final long now = ComponentUtil.getSystemHelper().getCurrentTimeAsLong();
                return new Date(now + timeToLive.longValue() * 1000 * 60);
            }
        }
        return documentExpires != null ? new Date(documentExpires) : null;
    }

    /**
     * Calculates the expiration time in milliseconds from the current time.
     *
     * @param days the number of days from now when the item should expire

     *
     * @param documentExpires the expiration period: -2 (system default), -1 (never expire),
     *                       0 or positive (expire after specified days)
     * @return this CrawlJob instance for method chaining
     */
    public CrawlJob documentExpires(final int documentExpires) {
        this.documentExpires = documentExpires;
        return this;
    }

    /**

        if (configId != null) {
            defaultDataMap.put(fessConfig.getIndexFieldConfigId(), configId);
        }
        //  expires
        if (documentExpires != null) {
            defaultDataMap.put(fessConfig.getIndexFieldExpires(), documentExpires);
        }
        // segment
        defaultDataMap.put(fessConfig.getIndexFieldSegment(), initParamMap.getAsString(Constants.SESSION_ID));
        // created

                    final Date documentExpires = crawlingInfoHelper.getDocumentExpires(crawlingConfig);
                    if (documentExpires != null
                            && !indexingHelper.updateDocument(searchEngineClient, id, fessConfig.getIndexFieldExpires(), documentExpires)) {

        if (configId != null) {
            putResultDataBody(dataMap, fessConfig.getIndexFieldConfigId(), configId);
        }
        //  expires
        if (documentExpires != null) {
            putResultDataBody(dataMap, fessConfig.getIndexFieldExpires(), documentExpires);
        }
        // segment
        putResultDataBody(dataMap, fessConfig.getIndexFieldSegment(), sessionId);
        // content

        if (configId != null) {
            putResultDataBody(dataMap, fessConfig.getIndexFieldConfigId(), configId);
        }
        //  expires
        if (documentExpires != null) {
            putResultDataBody(dataMap, fessConfig.getIndexFieldExpires(), documentExpires);
        }
        // lang
        final String lang = systemHelper.normalizeHtmlLang(