// num of threads
            final CrawlerContext crawlerContext = crawler.getCrawlerContext();
            final int numOfThread =
                    webConfig.getNumOfThread() != null ? webConfig.getNumOfThread() : Constants.DEFAULT_NUM_OF_THREAD_FOR_WEB;
            crawlerContext.setNumOfThread(numOfThread);

            // depth

        setupEpg(_epgMap, et -> ((FileConfig) et).getName(), (et, vl) -> ((FileConfig) et).setName(DfTypeUtil.toString(vl)), "name");
        setupEpg(_epgMap, et -> ((FileConfig) et).getNumOfThread(), (et, vl) -> ((FileConfig) et).setNumOfThread(DfTypeUtil.toInteger(vl)),
                "numOfThread");

                "maxAccessCount");
        setupEpg(_epgMap, et -> ((WebConfig) et).getName(), (et, vl) -> ((WebConfig) et).setName(DfTypeUtil.toString(vl)), "name");
        setupEpg(_epgMap, et -> ((WebConfig) et).getNumOfThread(), (et, vl) -> ((WebConfig) et).setNumOfThread(DfTypeUtil.toInteger(vl)),
                "numOfThread");