/**
* [Intended for direct usage by controller]<br>
* Tries to withdraw the tip with all implications which also depends on whether this SingleTip is
* associated with a GroupTip. This can lead to annulment of the submission of an associated
* GroupTip.<br>
*
* @return
* <ul>
* <li>0 - successful
* <li>-1 - not enough time left until the planned evaluation of the draw
* <li>1 - the associated group member would fall under his minimumStake limit (only tested
* if minimumStake > 1). Use GroupTip.removeAllTipsOfGroupMember(Customer groupMember)
* to withdraw the tips in this case.
* <li>2 - can not 'unsubmit' the group tip from draw and therefore not remove tip
* <ul>
*/
public int withdraw() {
if (groupTip == null) {
if (!draw.isTimeLeftUntilEvaluationForSubmission()) return -1;
draw.removeTip(this);
tipTicket.removeTip(this);
return 0;
} else {
return groupTip.removeSingleTip(this);
}
}
