code: func (e Errors) Error() string {
  	buf := bytes.NewBuffer(nil)
  	buf.WriteString("[")
  	for i, err := range e {
  		if err == nil {
  			buf.WriteString("<nil>")
  		} else {
  			buf.WriteString("<")
  			buf.WriteString(err.Error())
  			buf.WriteString(">")
  		}
  		if i < len(e)-1 {
  			buf.WriteString(", ")
  		}
  	}
  	buf.WriteString("]")
  	return buf.String()
  }
docs: // Error implements error.