func (r *Recurrence) HasPeriod() bool {
	if r != nil && r.Period != nil {
		return true
	}

	return false
}
func (r *Recurrence) HasPeriod() bool {
	if r != nil && r.Period != nil {
		return true
	}

	return false
}
// HasPeriod returns a boolean if a field has been set.