})
		return
	})
	return mg
}

// getHistogramMetrics fetches histogram metrics and returns it in a []Metric
// Note: Typically used in MetricGroup.RegisterRead
//
// The last parameter is added for compatibility - if true it lowercases the
// `api` label values.
func getHistogramMetrics(hist *prometheus.HistogramVec, desc MetricDescription, toLowerAPILabels bool) []MetricV2 {