@Override
    public java.util.concurrent.Future<ListFunctionsResult> listFunctionsAsync() {

        return listFunctionsAsync(new ListFunctionsRequest());
    }
Simplified method form for invoking the ListFunctions operation.

@see #listFunctionsAsync(ListFunctionsRequest)
aws-java-sdk-lambda/src/main/java/com/amazonaws/services/lambda/AWSLambdaAsyncClient.java