public long getTotalCount() {
        long totalCount = 0;
        for (LinkCallData linkCallData : linkCallDataMap.getLinkDataList()) {
            totalCount += linkCallData.getTotalCount();
        }
        return totalCount;
    }
@param hostname
           host name or endpoint
@param slot
@param count
web/src/main/java/com/navercorp/pinpoint/web/applicationmap/rawdata/LinkData.java