code: func BuildAuthorizer(s *options.ServerRunOptions, versionedInformers clientgoinformers.SharedInformerFactory) (authorizer.Authorizer, authorizer.RuleResolver, error) {
  	authorizationConfig := s.Authorization.ToAuthorizationConfig(versionedInformers)
  	return authorizationConfig.New()
  }
docs: // BuildAuthorizer constructs the authorizer