public void initializeMenus() {
// By now, everyone has registered their stuff, so start building the
// menu structure - first, assign actions to the menu items and, while
// we're at it, add the items to their menus
for(MvwMenuItem mii : menuItems.values()){
Action action = actions.get(mii.getActionName());
mii.setAction(action);
MvwMenu menu = allMenus.get(mii.getAddToMenu());
menu.addSubItem(mii);
}