}
@Override
public void onSuccess(Boolean result) {
if (result == true) {
eventBus.fireEvent(new EntityDeletedEvent());
eventBus.fireEvent(new UserMessageEvent(null, InfoTypes.Info, 0));
sendCancellationMail(slot, "NOT IMPLEMENTED");
} else {
eventBus.fireEvent(new UserMessageEvent(null, InfoTypes.Error, 0));
}