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

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