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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 get_revocation_time(self):
 """Get the revocation time as naive datetime. Note that this method is only used by cryptography>=2.4. """

        if self.revoked is False:
            return

        if timezone.is_aware(self.revoked_date):
            # convert datetime object to UTC and make it naive
            return timezone.make_naive(self.revoked_date, pytz.utc)

        return self.revoked_date