code: def create_record_set_group(self, name, g_dict):
          
          rs = route53.RecordSetGroup.from_dict(name, g_dict)
          rs = add_hosted_zone_id_if_missing(rs, self.hosted_zone_id)
          rs = self.add_hosted_zone_id_for_alias_target_if_missing(rs)
          return self.template.add_resource(rs)
docs: Accept a record_set dict. Return a Troposphere record_set object.