docs: public DistributedServiceWanEventCounters getWanEventCounter(String wanReplicationName,
                                                                   String targetGroupName,
                                                                   String serviceName) {
          final String wanPublisherId = wanReplicationName + ":" + targetGroupName;
          final WanPublisherEventCounters serviceWanEventCounters
                  = getOrPutIfAbsent(eventCounterMap, wanPublisherId, WAN_EVENT_COUNTER_CONSTRUCTOR_FN);
  
          return serviceWanEventCounters.getWanEventCounter(serviceName);
      }