AWS CDK用户池授权者

我正在尝试使用AWS-CDK创建API网关，并使用Cognito用户池授权者保护REST端点。

I'm trying to create an API gateway using the AWS-CDK and protect the REST endpoints with a Cognito user pool authorizer.

我找不到任何示例一个人会做到这一点。我认为应该看起来像这样，但是也许我不需要的方法不存在？

I cannot find any examples how one would do this. I thought it should look something like this but maybe the methods I need do not exist?

const cdk       = require('@aws-cdk/cdk');
const lambda    = require('@aws-cdk/aws-lambda');
const apigw     = require('@aws-cdk/aws-apigateway');

const path  = require('path');

// 
// Define the stack:
class MyStack extends cdk.Stack {
    constructor (parent, id, props) {
        super(parent, id, props);    

        var tmethodHandler = new lambda.Function(this, 'test-lambda', {
            runtime: lambda.Runtime.NodeJS810,
            handler: 'index.handler',
            code: lambda.Code.directory( path.join( __dirname, 'lambda')),
        });

        var api         = new apigw.RestApi(this, 'test-api');

        const tmethod   = api.root.addResource('testmethod');

        const tmethodIntegration    = new apigw.LambdaIntegration(tmethodHandler);

        tmethod.addMethod('GET', getSessionIntegration, {
            authorizationType: apigw.AuthorizationType.Cognito,
            authorizerId : 'crap!!!?'
        });

    }
}

class MyApp extends cdk.App {
    constructor (argv) {
        super(argv);

        new MyStack(this, 'test-apigw');
    }
}

console.log(new MyApp(process.argv).run());