public StandardEditorSystemMenu(IStackPresentationSite site) {
super(site);
closeOthers = new SystemMenuCloseOthers(site);
closeAll = new SystemMenuCloseAll(site);
openAgain = new SystemMenuNewEditor(site);
menuManager.add(closeOthers);
menuManager.add(closeAll);
menuManager.add(new Separator());
menuManager.add(openAgain);
}