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

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