Integer value = getSearchEngineHeartbeatIntervalAsInteger();
        if (value != null) {
            return value.longValue();
        }
        value = getAsInteger("elasticsearch.heartbeat_interval");
        if (value != null) {
            return value.longValue();
        }
        return 10000L;
    }

            if (responseData.getContentLength() > 0
                    && responseData.getContentLength() <= fessConfig.getCrawlerDocumentCacheMaxSizeAsInteger().longValue()) {
                String charSet = responseData.getCharSet();
                if (charSet == null) {
                    charSet = Constants.UTF_8;
                }