// by /api/a/b and /api/a/c (and any other matching descendant collector
	// paths).

	var gatherers []prometheus.Gatherer
	for _, collectorPath := range h.metricsData.collectorPaths {
		if collectorPath.isDescendantOf(path) {
			gatherer := h.metricsData.mgGatherers[collectorPath]

			// For Bucket metrics we need to set the buckets argument inside the
			// metric group, so that it will affect collection. If no buckets