def add_ui(self, shell): action_group = ActionGroup(shell, 'EqualizerActionGroup') action_group.add_action(func=self.show_ui, action_name='Equalize', label=_('_Equalizer'), action_type='app') self._appshell = ApplicationShell(shell) self._appshell.insert_action_group(action_group) self._appshell.add_app_menuitems(ui_string, 'EqualizerActionGroup')