@Test
public void retrieveAndUpdateRemoveExpired() throws InterruptedException {
List<FlashMap> flashMaps = new ArrayList<FlashMap>();
for (int i=0; i < 5; i++) {
FlashMap expiredFlashMap = new FlashMap();
expiredFlashMap.startExpirationPeriod(-1);
flashMaps.add(expiredFlashMap);
}
this.flashMapManager.setFlashMaps(flashMaps);
this.flashMapManager.retrieveAndUpdate(this.request, this.response);