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

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