code: def get_vpc_config(self, vpc_config_override=vpc_utils.VPC_CONFIG_DEFAULT):
          
          if vpc_config_override is vpc_utils.VPC_CONFIG_DEFAULT:
              return vpc_utils.to_dict(self.subnets, self.security_group_ids)
          else:
              return vpc_utils.sanitize(vpc_config_override)
docs: Returns VpcConfig dict either from this Estimator's subnets and security groups,
          or else validate and return an optional override value.