def __init__(self, *args, **kwargs):
        if 'extent' is kwargs and kwargs['extent'] is not None:
            raise NotImplementedError("ModestImage does not support extents")

        self._full_res = None
        self._sx, self._sy = None, None
        self._bounds = None
        super(ModestImage, self).__init__(*args, **kwargs)
dataset/ETHPy150Open glue-viz/glue/glue/external/modest_image.py/ModestImage.__init__/operator `in` -> `is`