def stack_widget(self):
        for child in reversed(self.children):
            if isinstance(child, Container):
                return child
Helper to get row and column cals
dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/widgets/stack_item.py/StackItem.stack_widget--crossover with--dataset/ETHPy150Open mne-tools/mne-python/mne/io/ctf_comp.py/_calibrate_comp