@Override
    public List<ApiGatewayConfig.ApiType> getApiTypes() {
        return ListUtils.of(ApiGatewayConfig.ApiType.REST);
    }
The default gateway response for 4xx and 5xx.

TODO: Does this need to be made protocol-specific?
smithy-aws-apigateway-openapi/src/main/java/software/amazon/smithy/aws/apigateway/openapi/AddCorsToGatewayResponses.java