@Override
public void updateControl(ControlArb controlArb) {
super.updateControl(controlArb);
if (controlArb instanceof ControlArbSingle) {
ControlArbSingle ca = (ControlArbSingle) controlArb;
setController(ca.getController());
} else {
// TODO: someday: if it's Multi it would be nice to display the number of users controlling,
// or actually a list of users controlling.
}
}