issue- cloanable not added in model class - FreeBusyDateModel

[Lakshmi-s-rao-28]

FreeBusyDateModel is returning null. Need to add Cloanable.

public class FreeBusyDateModel implements Serializable, Cloneable {

@JsonProperty("time")
private String time;

@JsonProperty("tzid")
private String tzid;

private FreeBusyDateModel(String time, String tzid) {
	this.time = time;
	this.tzid = tzid;
}

public static FreeBusyDateModel of(String time) {
	return new FreeBusyDateModel(time, null);
}

public static FreeBusyDateModel of(String time, String tzid) {
	return new FreeBusyDateModel(time, tzid);
}

public Object clone() throws CloneNotSupportedException {
	return super.clone();
}

}