listBlocks.insert(0, 2);
listBlocks.insert(4, 6);
listBlocks.delete(8, 10);
listBlocks.delete(10, 12);
listBlocks.update(12, 14);
listBlocks.update(16, 18);
BlockSequence.Iterator iterator = listBlocks.iterator();
assertNext(0, ListEvent.INSERT, iterator);
assertNext(1, ListEvent.INSERT, iterator);
assertNext(4, ListEvent.INSERT, iterator);