@Override
    public java.util.concurrent.Future<GetQAppSessionResult> getQAppSessionAsync(GetQAppSessionRequest request) {

        return getQAppSessionAsync(request, null);
    }
Abstract implementation of {@code AWSQAppsAsync}. Convenient method forms pass through to the corresponding overload
that takes a request object and an {@code AsyncHandler}, which throws an {@code UnsupportedOperationException}.
aws-java-sdk-qapps/src/main/java/com/amazonaws/services/qapps/AbstractAWSQAppsAsync.java