def index_to_widget(self, idx):
        nchild = self.mdi_w.get_nth_page(idx)
        return self._native_to_child(nchild)
remove local logical port hook callback
dataset/ETHPy150Open ejeschke/ginga/ginga/gtkw/Widgets.py/MDIWidget2.index_to_widget--crossover with--dataset/ETHPy150Open openstack/dragonflow/dragonflow/controller/df_db_notifier.py/DBNotifyInterface.remove_local_port