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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 to_dict(self):
 """Return state as a dictionary. Result can be used to serialize the instance and reconstitute it later using :meth:`from_dict`. :rtype: dict """

        session = self._get_session()
        snapshot = self._get_snapshot()
        return {
            "session_id": session._session_id,
            "transaction_id": snapshot._transaction_id,
        }