private void assertWriteBehindQueuesEmptyOnOwnerAndOnBackups(final String mapName,
final long numberOfItems,
final MapStoreWithCounter mapStore,
final HazelcastInstance[] nodes) {
AssertTask assertTask = new AssertTask() {
@Override
public void run() throws Exception {
assertEquals(0, writeBehindQueueSize(nodes[0], mapName));
assertEquals(0, writeBehindQueueSize(nodes[1], mapName));