//                                       ---------------
    protected final Map<String, PropertyGateway> _epgMap = newHashMap();
    {
        setupEpg(_epgMap, et -> ((ClickLog) et).getUrlId(), (et, vl) -> ((ClickLog) et).setUrlId(DfTypeUtil.toString(vl)), "urlId");
        setupEpg(_epgMap, et -> ((ClickLog) et).getDocId(), (et, vl) -> ((ClickLog) et).setDocId(DfTypeUtil.toString(vl)), "docId");