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

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