}
public ActionForward deleteExemption(ActionMapping mapping, ActionForm form, HttpServletRequest request,
HttpServletResponse response) {
final Exemption exemption = getExemption(request);
request.setAttribute("eventId", exemption.getEvent().getExternalId());
try {
DeleteExemption.run(exemption);
} catch (DomainExceptionWithLabelFormatter ex) {
addActionMessage(request, ex.getKey(), solveLabelFormatterArgs(request, ex.getLabelFormatterArgs()));