Request handlers expect a synchronous ProgressEvent response instead of async

The invokeHandler() method in AbstractWrapper.java and handleRequest() method in LambdaWrapper.java seems to always return a synchronous response in form of ProgressEvent. With server side programming semantics, I would expect them to return an async response (like a JAVA future).

Is this a limitation of aws lambda or the cloudformation infra should use the async library for aws lambda?

先閱讀 AbstractWrapper.java 中的 invokeHandler() 和 LambdaWrapper.java 中的 handleRequest()，然後追蹤 Java 外掛程式如何表示 ProgressEvent 回應。檢查 AWS Lambda 和 CloudFormation 的請求生命週期，以判斷是否支援非同步回應。只有在對回應契約做出明確決定，並就實作範圍達成共識後，才算完成。

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