func (r *Errors) Error() error {
	if r.HasError() {
		return fmt.Errorf("%s", strings.Join(r.errs, ","))
	}
	return nil
}
// Error return errors merged error message.
Error return errors merged error message.
// Error return errors merged error message .
func (r *Errors) Error() error {
	if r.HasError() {
		return fmt.Errorf("%s", strings.Join(r.errs, ","))
	}
	return nil
}
func ( r * Errors ) Error ( ) error { if r . HasError ( ) { return fmt . Errorf ( " " , strings . Join ( r . errs , " " ) ) } return nil }
Error return errors merged error message.
Error return errors merged error message .