@property
    def categories(self):
        return tuple(self._categories)
Overridden to make sure we call our custom __getstate__.
dataset/ETHPy150Open scanny/python-pptx/pptx/chart/data.py/ChartData.categories--crossover with--dataset/ETHPy150Open enthought/traits/traits/trait_handlers.py/TraitSetObject.__reduce_ex__