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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:
 async def export_image(self, name: str):
 """ Get a tarball of an image by name or id. Args: name: name/id of the image to be exported Returns: Streamreader of tarball image """

        response = await self.docker._query(
            "images/{name}/get".format(name=name), "GET"
        )
        return response.content