v1 += v
					clusterObjectSizesHistogram[k] = v1
				}
			}
			for k, v := range usage.ObjectVersionsHistogram {
				v1, ok := clusterVersionsHistogram[k]
				if !ok {
					clusterVersionsHistogram[k] = v
				} else {
					v1 += v
					clusterVersionsHistogram[k] = v1
				}
			}
		}

		metrics = append(metrics, MetricV2{
			Description: getClusterUsageTotalBytesMD(),