usageVersionsDistributionMD = NewGaugeMD(usageVersionCountDistribution,
		"Cluster object version count distribution", "range")
)

// loadClusterUsageObjectMetrics - reads cluster usage metrics.
//
// This is a `MetricsLoaderFn`.
func loadClusterUsageObjectMetrics(ctx context.Context, m MetricValues, c *metricsCache) error {
	dataUsageInfo, err := c.dataUsageInfo.Get()
	if err != nil {
		metricsLogIf(ctx, err)
		return nil

			usageTotalBytesMD,
			usageObjectsCountMD,
			usageVersionsCountMD,
			usageDeleteMarkersCountMD,
			usageBucketsCountMD,
			usageObjectsDistributionMD,
			usageVersionsDistributionMD,
		},
		loadClusterUsageObjectMetrics,
	)

	clusterUsageBucketsMG := NewMetricsGroup(clusterUsageBucketsCollectorPath,
		[]MetricDescriptor{
			usageSinceLastUpdateSecondsMD,
			usageBucketTotalBytesMD,
			usageBucketObjectsTotalMD,