public RecurrenceRule setRecurrenceRule(Recurrence recur) {
		RecurrenceRule prop = (recur == null) ? null : new RecurrenceRule(recur);
		setRecurrenceRule(prop);
		return prop;
	}
public RecurrenceRule setRecurrenceRule ( Recurrence recur ) { RecurrenceRule prop = ( recur == null ) ? null : new RecurrenceRule ( recur ) ; setRecurrenceRule ( prop ) ; return prop ; }
Sets how often the journal entry repeats.
@param recur the recurrence rule or null to remove
@return the property that was created
@see <a href="http://tools.ietf.org/html/rfc5545#page-122">RFC 5545
p.122-32</a>
@see <a href="http://tools.ietf.org/html/rfc2445#page-117">RFC 2445
p.117-25</a>