code: func (a *AuthWithRoles) GetNamespace(name string) (*services.Namespace, error) {
  	if err := a.action(defaults.Namespace, services.KindNamespace, services.VerbRead); err != nil {
  		return nil, trace.Wrap(err)
  	}
  	return a.authServer.GetNamespace(name)
  }
docs: // GetNamespace returns namespace by name