@aws-cdk/aws-apigatewayv2-integrations-alpha: Lambda async invocation docs

[vmashnitskaya]

Describe the issue

Hello! I am using the following examples to create the API Gateway + Lambda https://docs.aws.amazon.com/cdk/api/v2/docs/aws-apigatewayv2-alpha-readme.html. Currently, I would like to use async invocation described here https://docs.aws.amazon.com/apigateway/latest/developerguide/set-up-lambda-integration-async.html. But there is no documentation on this. I tried to use parameter mapping https://docs.aws.amazon.com/apigateway/latest/developerguide/http-api-parameter-mapping.html but the X-Amz-Invocation-Type should be reserved value and is not applied. Could you please add the examples for such case?

Links

[pahud]

Thank you. As this is a request for general guidance I am moving this to discussion.