Using MacOSLib Cocoa MenuItems

I’ve copied the Cocoa Menuitems class to a new project and assigned CocoaMenuItemPasteAndMatchStyle as the super for the Edit → Paste and Match Styles menuitem. It compiles, but no breakpoint I set in EventHandles fires when I launch the app and the Paste and Match Style doesn’t enable when the insertion point is in a TextArea. Is anybody familiar enough with MacOSLib to tell me what needs to be done to instantiate the menu? It doesn’t seem that it should need any other component of MacOSLib to work.