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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 populate(self, ticket=None):
 """ Populate the database with types retrieved from the AFIP. If no ticket is provided, the most recent available one will be used. """

        ticket = ticket or AuthTicket.objects.get_any_active('wsfe')
        client = clients.get_client('wsfe', ticket.owner.is_sandboxed)
        service = getattr(client.service, self.__service_name)
        response_xml = service(serializers.serialize_ticket(ticket))

        check_response(response_xml)

        for result in getattr(response_xml.ResultGet, self.__type_name):
            self.get_or_create(
                code=result.Id,
                description=result.Desc,
                valid_from=parsers.parse_date(result.FchDesde),
                valid_to=parsers.parse_date(result.FchHasta),
            )