}
		idRanges = append(idRanges, rng)
	}
	return idRanges, nil
}

// getSupplementalGroupsAnnotation provides a backwards compatible way to get supplemental groups
// annotations from a namespace by looking for SupplementalGroupsAnnotation and falling back to
// UIDRangeAnnotation if it is not found.
func getSupplementalGroupsAnnotation(ns *corev1.Namespace) (string, error) {