code: func NewRoleAuthorizer(clusterName string, clusterConfig services.ClusterConfig, r teleport.Role) (Authorizer, error) {
  	authContext, err := contextForBuiltinRole(clusterName, clusterConfig, r, fmt.Sprintf("%v", r))
  	if err != nil {
  		return nil, trace.Wrap(err)
  	}
  	return &contextAuthorizer{authContext: *authContext}, nil
  }
docs: // NewRoleAuthorizer authorizes everyone as predefined role, used in tests