func TestMetricsNilSupportsMetrics(t *testing.T) {
	metrics := &MetricsNil{}
	supported := metrics.SupportsMetrics()
	if supported {
		t.Error("Expected no support for metrics")
	}
}

func TestMetricsNilGetCapacity(t *testing.T) {
	metrics := &MetricsNil{}
	actual, err := metrics.GetMetrics()
	expected := &Metrics{}
	if *actual != *expected {
		t.Errorf("Expected empty Metrics, actual %v", *actual)
	}
	if err == nil {

		"Count of online drives in the cluster")
	healthDrivesCountMD = NewGaugeMD(healthDrivesCount,
		"Count of all drives in the cluster")
)

// loadClusterHealthDriveMetrics - `MetricsLoaderFn` for cluster storage drive metrics
// such as online, offline and total drives.
func loadClusterHealthDriveMetrics(ctx context.Context, m MetricValues,
	c *metricsCache,
) error {
	clusterDriveMetrics, _ := c.clusterDriveMetrics.Get()

// See MetricsProvider.GetMetrics
func (md *cachedMetrics) GetMetrics() (*Metrics, error) {
	md.once.cache(func() error {
		md.resultMetrics, md.resultError = md.wrapped.GetMetrics()
		return md.resultError
	})
	return md.resultMetrics, md.resultError
}

// Copied from sync.Once but we don't want to cache the results if there is an
// error
type cacheOnce struct {
	m    sync.Mutex
	done uint32
}

// Metrics.  It serves as a placeholder for Volumes that do not yet support
// metrics.
type MetricsNil struct{}

// SupportsMetrics returns false for the MetricsNil type.
func (*MetricsNil) SupportsMetrics() bool {
	return false
}

// GetMetrics returns an empty Metrics and an error.
// See MetricsProvider.GetMetrics
func (*MetricsNil) GetMetrics() (*Metrics, error) {

	}
	return result, nil
}

type fakeMetricsDu struct {
	fakeStats *volume.Metrics
}

// NewFakeMetricsDu inserts fake statistics when asked for metrics
func NewFakeMetricsDu(path string, stats *volume.Metrics) volume.MetricsProvider {
	return &fakeMetricsDu{fakeStats: stats}
}

func (f *fakeMetricsDu) GetMetrics() (*volume.Metrics, error) {
	if f.fakeStats == nil {
		return nil, fmt.Errorf("no stats provided")
	}

# See the License for the specific language governing permissions and
# limitations under the License.

# This script runs to ensure that we do not violate metric stability
# policies.
# Usage: `hack/verify-generated-stable-metrics.sh`.

set -o errexit
set -o nounset
set -o pipefail

KUBE_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
source "${KUBE_ROOT}/test/instrumentation/stability-utils.sh"

)

// loadClusterNotificationMetrics - `MetricsLoaderFn` for cluster notification metrics.
func loadClusterNotificationMetrics(_ context.Context, m MetricValues, _ *metricsCache) error {
	if globalEventNotifier == nil {
		return nil
	}

	nstats := globalEventNotifier.targetList.Stats()

setattr(_current_module, "enable_v2_behavior", enable_v2_behavior)

# Add module aliases
_losses = _KerasLazyLoader(
    globals(), submodule="losses", name="losses", mode="v2")
_metrics = _KerasLazyLoader(
    globals(), submodule="metrics", name="metrics", mode="v2")
_optimizers = _KerasLazyLoader(
    globals(), submodule="optimizers", name="optimizers", mode="v2")
_initializers = _KerasLazyLoader(

									Binding:        binding,
									PolicyDecision: decision,
								})
								celmetrics.Metrics.ObserveRejection(ctx, decision.Elapsed, definition.Name, binding.Name, "active")
							case admissionregistrationv1.Audit:
								publishValidationFailureAnnotation(binding, i, decision, versionedAttr)
								celmetrics.Metrics.ObserveAudit(ctx, decision.Elapsed, definition.Name, binding.Name, "active")

  {{ $prom := include "default-prometheus" . | eq "true" }}
  {{ $sdMetrics := include "default-sd-metrics" . | eq "true" }}
  {{ $sdLogs := include "default-sd-logs" . | eq "true" }}
  {{- if or $prom $sdMetrics $sdLogs }}
    defaultProviders:
    {{- if or $prom $sdMetrics }}
      metrics:
      {{ if $prom }}- prometheus{{ end }}
      {{ if and $sdMetrics $sdLogs }}- stackdriver{{ end }}
    {{- end }}