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

@param params
       Current builder configuration represented as a parameter object.
@return Fully configured implementation of AmazonCloudSearchDomainAsync.
aws-java-sdk-cloudsearch/src/main/java/com/amazonaws/services/cloudsearchdomain/AmazonCloudSearchDomainAsyncClientBuilder.java