code: func hasUsageStats(resourceQuota *corev1.ResourceQuota, interestingResources []corev1.ResourceName) bool {
  	interestingSet := quota.ToSet(interestingResources)
  	for resourceName := range resourceQuota.Status.Hard {
  		if !interestingSet.Has(string(resourceName)) {
  			continue
  		}
  		if _, found := resourceQuota.Status.Used[resourceName]; !found {
  			return false
  		}
  	}
  	return true
  }
docs: // hasUsageStats returns true if for each hard constraint in interestingResources there is a value for its current usage