code: func TooLong(name, in string, max int64) *Validation {
  	var msg string
  	if in == "" {
  		msg = fmt.Sprintf(tooLongMessageNoIn, name, max)
  	} else {
  		msg = fmt.Sprintf(tooLongMessage, name, in, max)
  	}
  	return &Validation{
  		code:    TooLongFailCode,
  		Name:    name,
  		In:      in,
  		message: msg,
  	}
  }
docs: // TooLong error for when a string is too long