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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def image(self):
 """ An |Image| object providing access to the properties and bytes of the image in this picture shape. """

        slide_part, rId = self.part, self._element.blip_rId
        if rId is None:
            raise ValueError('no embedded image')
        return slide_part.get_image(rId)