code: public Id fetchConsumerStatId() {
  
          if (consumerId == null) {
              synchronized (consumerIdLock) {
                  if (consumerId == null) {
                      consumerId = Lookout.registry().createId("rpc.consumer.service.stats");
                  }
              }
          }
  
          return consumerId;
      }
docs: create consumerId
  
  @return consumerId