// First collect all matching MetricsGroup's
	matchingMG := make(map[collectorPath]*MetricsGroup)
	for _, collPath := range h.metricsData.collectorPaths {
		if collPath.isDescendantOf(path) {
			if v, ok := h.metricsData.mgMap[collPath]; ok {
				matchingMG[collPath] = v
			} else if v, ok := h.metricsData.bucketMGMap[collPath]; ok {
				matchingMG[collPath] = v
			}
		}
	}

	if len(matchingMG) == 0 {
		return nil
	}