docs: func (s *NotificationProperty) Validate() error {
  	invalidParams := request.ErrInvalidParams{Context: "NotificationProperty"}
  	if s.NotifyDelayAfter != nil && *s.NotifyDelayAfter < 1 {
  		invalidParams.Add(request.NewErrParamMinValue("NotifyDelayAfter", 1))
  	}
  
  	if invalidParams.Len() > 0 {
  		return invalidParams
  	}
  	return nil
  }