有没有一些将lambda发布到sns主题的cdk typescript示例？

import * as cdk from 'aws-cdk-lib';
import * as lambda from 'aws-cdk-lib/aws-lambda';
import * as sns from 'aws-cdk-lib/aws-sns';
import * as subscriptions from 'aws-cdk-lib/aws-sns-subscriptions';

const app = new cdk.App();
const stack = new cdk.Stack(app, 'LambdaSnsExampleStack');

// 创建Lambda函数
const lambdaFunction = new lambda.Function(stack, 'MyLambdaFunction', {
  runtime: lambda.Runtime.NODEJS_14_X,
  handler: 'index.handler',
  code: lambda.Code.fromAsset('lambda'),
});

// 创建SNS主题
const topic = new sns.Topic(stack, 'MySNSTopic');

// 将Lambda函数添加为SNS主题的订阅者
topic.addSubscription(new subscriptions.LambdaSubscription(lambdaFunction));

app.synth();