t.Errorf("Unexpected error finding expected empty directory usage on tmpfs: %v", err)
	}

	// TODO(pwittroc): Move this into a reusable testing utility
	metrics, err := mounter.GetMetrics()
	if err != nil {
		t.Errorf("Unexpected error when calling GetMetrics %v", err)
	}
	if e, a := expectedEmptyDirUsage.Value(), metrics.Used.Value(); e != a {
		t.Errorf("Unexpected value for empty directory; expected %v, got %v", e, a)
	}

	health       *diskHealthTracker
	healthCheck  bool

	metricsCache *cachevalue.Cache[DiskMetrics]
	diskCtx      context.Context
	diskCancel   context.CancelFunc
}

func (p *xlStorageDiskIDCheck) getMetrics() DiskMetrics {
	p.metricsCache.InitOnce(5*time.Second,
		cachevalue.Opts{},
		func(ctx context.Context) (DiskMetrics, error) {
			diskMetric := DiskMetrics{

	}

	for index, err := range g.Wait() {
		if err != nil {
			sys.addNodeErr(&reply[index], sys.peerClients[index], err)
		}
	}
	return reply
}

// GetMetrics - Get metrics from all peers.
func (sys *NotificationSys) GetMetrics(ctx context.Context, t madmin.MetricType, opts collectMetricsOpts) []madmin.RealtimeMetrics {
	reply := make([]madmin.RealtimeMetrics, len(sys.peerClients))

	resp, err := getMemInfoRPC.Call(ctx, client.gridConn(), grid.NewMSS())
	return resp.ValueOrZero(), err
}

// GetMetrics - fetch metrics from a remote node.
func (client *peerRESTClient) GetMetrics(ctx context.Context, t madmin.MetricType, opts collectMetricsOpts) (info madmin.RealtimeMetrics, err error) {
	values := make(url.Values)

		getWebhookMetrics(),
		getTierMetrics(),
	}

	allMetricsGroups := func() (allMetrics []*MetricsGroupV2) {
		allMetrics = append(allMetrics, clusterMetricsGroups...)
		allMetrics = append(allMetrics, peerMetricsGroups...)
		return allMetrics
	}()

	nodeGroups := []*MetricsGroupV2{
		getNodeHealthMetrics(MetricsGroupOpts{dependGlobalNotificationSys: true}),

	return nil
}

func (f *stubBlockVolume) UnmapPodDevice() error {
	return nil
}

func (f *stubBlockVolume) SupportsMetrics() bool {
	return false
}

func (f *stubBlockVolume) GetMetrics() (*volume.Metrics, error) {
	return nil, nil

	return ret
}

// Volume interfaces

func (plugin *mockVolumePlugin) GetPath() string {
	return ""
}

func (plugin *mockVolumePlugin) GetMetrics() (*volume.Metrics, error) {
	return nil, nil
}

// Recycler interfaces

func (plugin *mockVolumePlugin) Recycle(pvName string, spec *volume.Spec, eventRecorder recyclerclient.RecycleEventRecorder) error {

- Support `FakeClientset`...

return totalBreakdown;}