code: func (v *Application) GetMenubar() *glib.MenuModel {
  	c := C.gtk_application_get_menubar(v.native())
  	if c == nil {
  		return nil
  	}
  	return &glib.MenuModel{glib.Take(unsafe.Pointer(c))}
  }
docs: // GetMenubar is a wrapper around gtk_application_get_menubar().