@Override
            public void onClose(WatcherException cause) {
                if (closed) {
                    return;
                }

                logger.warn("[{}/{}] Pod watcher is closed.", namespace, serviceName, cause);
                scheduleRestartWithBackoff(++numPodFailures);
            }
Watches the service. {@link Watcher} will retry automatically on failures by {@link KubernetesClient}.
kubernetes/src/main/java/com/linecorp/armeria/client/kubernetes/endpoints/KubernetesEndpointGroup.java