class TimelineWindowAction implements ActionListener {

    @Override
    public void actionPerformed(ActionEvent e) {<FILL_FUNCTION_BODY>}
}

        BottomComponentImpl bottomComponent = Lookup.getDefault().lookup(BottomComponentImpl.class);
        if (bottomComponent != null) {
            bottomComponent.setVisible(!bottomComponent.isVisible());
        }
    
<no_super_class>