harness.check(event.getType(), ListDataEvent.INTERVAL_REMOVED);
harness.check(event.getIndex0(), 2);
harness.check(event.getIndex1(), 2);
listener.setListDataEvent(null);
m1.removeElementAt(0);
harness.check(m1.get(0), "B");
event = listener.getEvent();
harness.check(event.getType(), ListDataEvent.INTERVAL_REMOVED);
harness.check(event.getIndex0(), 0);
harness.check(event.getIndex1(), 0);