code: func NotMultipleOf(name, in string, multiple interface{}) *Validation {
  	var msg string
  	if in == "" {
  		msg = fmt.Sprintf(multipleOfFailNoIn, name, multiple)
  	} else {
  		msg = fmt.Sprintf(multipleOfFail, name, in, multiple)
  	}
  	return &Validation{
  		code:    MultipleOfFailCode,
  		Name:    name,
  		In:      in,
  		Value:   multiple,
  		message: msg,
  	}
  }
docs: // NotMultipleOf error for when multiple of validation fails