@Override
    protected AmazonQLDBSessionAsync build(AwsAsyncClientParams params) {
        return new AmazonQLDBSessionAsyncClient(params);
    }
Construct an asynchronous implementation of AmazonQLDBSessionAsync using the current builder configuration.

@param params
       Current builder configuration represented as a parameter object.
@return Fully configured implementation of AmazonQLDBSessionAsync.
aws-java-sdk-qldbsession/src/main/java/com/amazonaws/services/qldbsession/AmazonQLDBSessionAsyncClientBuilder.java