docs: 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),
              )