def _initShapeInZone(self, **kwargs):
        self.shape_in_zone = kwargs.get('shape_in_zone', Pad.SHAPE_IN_ZONE_OUTLINE)
        if self.shape_in_zone not in Pad._SHAPE_IN_ZONE:
            raise ValueError('{shape} is an illegal specifier for the shape in zone option'
                             .format(shape=self.shape_in_zone))