@Override
  public void apply(Swagger swagger) {
    Map<String, Object> extensions = defaultExtensions();

    for (Path path : swagger.getPaths().values()) {
      for (Operation operation : path.getOperations()) {
        operation.setVendorExtension("x-amazon-apigateway-integration", extensions);
      }
    }
  }
The template for the Lambda function name to proxy to, in Cloudformation's Fn::Sub syntax.

<p>A typical format for this is:

<p>arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${MyLambdaFunction.Arn}/invocations
buildSrc/src/main/java/com/amazonaws/blox/swagger/ApiGatewayExtensionsFilter.java