if err != nil {
		return nil, err
	}

	opts := []metric.Option{metric.WithReader(prom)}
	opts = append(opts, knownMetrics.toHistogramViews()...)
	mp := metric.NewMeterProvider(opts...)
	otel.SetMeterProvider(mp)
	handler := promhttp.HandlerFor(gatherer, promhttp.HandlerOpts{})
	return handler, nil
}

// A Metric collects numerical observations.
type Metric interface {