}
private void expandTo(JSplitPaneOperator oper, int index) {
ContainerOperator divOper = oper.getDivider();
JButtonOperator bo =
new JButtonOperator((JButton)divOper.
waitSubComponent(new JButtonOperator.
JButtonFinder(ComponentSearcher.
getTrueChooser("JButton")),
index));
bo.copyEnvironment(divOper);