docs: @Scheduled(fixedDelay = "${micronaut.heartbeat.interval:15s}",
                 initialDelay = "${micronaut.heartbeat.initial-delay:5s}")
      public void pulsate() {
          ServiceInstance instance = eventReference.get();
          if (instance != null) {
              eventPublisher.publishEvent(new HeartbeatEvent(instance, currentHealthStatus.current()));
          }
      }