def _get_dock_widget(self, pane):
        raise NotImplementedError
Change index of the column
dataset/ETHPy150Open enthought/pyface/pyface/ui/qt4/tasks/main_window_layout.py/MainWindowLayout._get_dock_widget--crossover with--dataset/ETHPy150Open Net-ng/kansha/kansha/column/comp.py/Column.change_index