ch := make(chan prometheus.Metric)
	go func() {
		defer xioutil.SafeClose(ch)
		// Collects prometheus metrics from hist and sends it over ch
		hist.Collect(ch)
	}()

	// Converts metrics received into internal []Metric type
	var metrics []MetricV2
	buckets := make(map[string][]MetricV2, v2MetricsMaxBuckets)
	for promMetric := range ch {
		dtoMetric := &dto.Metric{}