protected void createChange(IBaseModel model) {
   IEditorPart part = MDEPlugin.getActivePage().getActiveEditor();
   if (part instanceof ManifestEditor) {
     ManifestEditor editor = (ManifestEditor) part;
     IBaseModel base = editor.getAggregateModel();
     if (base instanceof IBundlePluginModelBase) {
       IBundlePluginModelBase pluginModel = (IBundlePluginModelBase) base;
       NewExtensionPointWizard wizard =
           new NewExtensionPointWizard(
               pluginModel.getUnderlyingResource().getProject(), pluginModel, editor) {
             public boolean performFinish() {
               return super.performFinish();
             }
           };
       WizardDialog dialog = new WizardDialog(MDEPlugin.getActiveWorkbenchShell(), wizard);
       dialog.create();
       SWTUtil.setDialogSize(dialog, 400, 450);
       dialog.open();
     }
   }
 }