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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 unstructure_attrs_astuple(self, obj):
 # type: (Any) -> Tuple """Our version of `attrs.astuple`, so we can call back to us."""

        attrs = obj.__class__.__attrs_attrs__
        return tuple(self.unstructure(getattr(obj, a.name)) for a in attrs)