code: func (d *DefaultLimitRangerActions) SupportsAttributes(a admission.Attributes) bool {
  	if a.GetSubresource() != "" {
  		return false
  	}
  
  	// Since containers and initContainers cannot currently be added, removed, or updated, it is unnecessary
  	// to mutate and validate limitrange on pod updates. Trying to mutate containers or initContainers on a pod
  	// update request will always fail pod validation because those fields are immutable once the object is created.
  	if a.GetKind().GroupKind() == api.Kind("Pod") && a.GetOperation() == admission.Update {
  		return false
  	}
  
  	return a.GetKind().GroupKind() == api.Kind("Pod") || a.GetKind().GroupKind() == api.Kind("PersistentVolumeClaim")
  }
docs: // SupportsAttributes ignores all calls that do not deal with pod resources or storage requests (PVCs).
  // Also ignores any call that has a subresource defined.