code: func (w *WebhookAuthorizer) RulesFor(user user.Info, namespace string) ([]authorizer.ResourceRuleInfo, []authorizer.NonResourceRuleInfo, bool, error) {
  	var (
  		resourceRules    []authorizer.ResourceRuleInfo
  		nonResourceRules []authorizer.NonResourceRuleInfo
  	)
  	incomplete := true
  	return resourceRules, nonResourceRules, incomplete, fmt.Errorf("webhook authorizer does not support user rule resolution")
  }
docs: //TODO: need to finish the method to get the rules when using webhook mode