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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 _dictify(self, doc):
 """Transforms the replies to a regular Python dict with strings and datetimes. Tested with BankID version 2.5 return data. :param doc: The response as interpreted by :py:mod:`zeep`. :returns: The response parsed to a dict. :rtype: dict """

        return {
            k: (self._dictify(doc[k]) if hasattr(doc[k], "_xsd_type") else doc[k])
            for k in doc
        }