code: func NewAuthorizer(graph *Graph, identifier nodeidentifier.NodeIdentifier, rules []rbacv1.PolicyRule) authorizer.Authorizer {
  	return &NodeAuthorizer{
  		graph:      graph,
  		identifier: identifier,
  		nodeRules:  rules,
  		features:   utilfeature.DefaultFeatureGate,
  	}
  }
docs: // NewAuthorizer returns a new node authorizer