metricsRouter.Handle(prometheusMetricsV2BucketPath, auth(metricsBucketHandler()))
	metricsRouter.Handle(prometheusMetricsV2NodePath, auth(metricsNodeHandler()))
	metricsRouter.Handle(prometheusMetricsV2ResourcePath, auth(metricsResourceHandler()))

	// Metrics v3
	metricsV3Server := newMetricsV3Server(auth)

	// Register metrics v3 handler. It also accepts an optional query
	// parameter `?list` - see handler for details.

					metrics = append(metrics, prepareResourceMetrics(m, subSys, requireAvgMax)...)
				}
			}
		}

		return metrics
	})
	return mg
}

// metricsResourceHandler is the prometheus handler for resource metrics
func metricsResourceHandler() http.Handler {
	return metricsHTTPHandler(resourceCollector, "handler.MetricsResource")