func DeleteServingURL(c context.Context, key appengine.BlobKey) error {
	req := &pb.ImagesDeleteUrlBaseRequest{
		BlobKey: (*string)(&key),
	}
	res := &pb.ImagesDeleteUrlBaseResponse{}
	return internal.Call(c, "images", "DeleteUrlBase", req, res)
}
func DeleteServingURL(c context.Context, key appengine.BlobKey) error {
	req := &pb.ImagesDeleteUrlBaseRequest{
		BlobKey: (*string)(&key),
	}
	res := &pb.ImagesDeleteUrlBaseResponse{}
	return internal.Call(c, "images", "DeleteUrlBase", req, res)
}
// DeleteServingURL deletes the serving URL for an image.