collectors[mg.CollectorPath] = mg
	}

	// Helper function to register a collector and return a gatherer for it.
	mustRegister := func(c ...prometheus.Collector) prometheus.Gatherer {
		subRegistry := prometheus.NewRegistry()
		for _, col := range c {
			subRegistry.MustRegister(col)
		}
		r.MustRegister(subRegistry)
		return subRegistry
	}

	// Register all collectors and create gatherers for them.

	}
}

func metricsHTTPHandler(c prometheus.Collector, funcName string) http.Handler {
	registry := prometheus.NewRegistry()

	// Report all other metrics
	logger.CriticalIf(GlobalContext, registry.Register(c))

	// DefaultGatherers include golang metrics and process metrics.
	gatherers := prometheus.Gatherers{
		registry,