ISelection sel = new StructuredSelection(bo);
        TabbedPropertySheetPage namepage = new TabbedPropertySheetPage(new ITabbedPropertySheetPageContributor() {
            public String getContributorId() {
                return "contributorId";
            }
        });
        PropertyPage page = null; // how do I get from a tabbed property sheet page to a PropertyPage?
        PreferenceManager mgr = new PreferenceManager();
        IPreferenceNode node = new PreferenceNode("1", page);
        mgr.addToRoot(node);
        PropertyDialog dialog = new PropertyDialog(shell, mgr, sel);
        dialog.create();
        dialog.setMessage(page.getTitle());
        dialog.open();