m1.addElement("C");
m1.addElement("B");
m1.addElement("A");
boolean removed = m1.removeElement("A");
harness.check(m1.lastElement(), "A");
harness.check(m1.size(), 7);
harness.check(removed);
ListDataEvent event = listener.getEvent();
harness.check(event.getType(), ListDataEvent.INTERVAL_REMOVED);
harness.check(event.getIndex0(), 0);