code: func ignoreStatusNotFoundFromError(err error) error {
  	if err == nil {
  		return nil
  	}
  	v, ok := err.(autorest.DetailedError)
  	if ok && v.StatusCode == http.StatusNotFound {
  		return nil
  	}
  	return err
  }
docs: // If it is StatusNotFound return nil,
  // Otherwise, return what it is