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

@param params
       Current builder configuration represented as a parameter object.
@return Fully configured implementation of AmazonElasticLoadBalancingAsync.
aws-java-sdk-elasticloadbalancingv2/src/main/java/com/amazonaws/services/elasticloadbalancingv2/AmazonElasticLoadBalancingAsyncClientBuilder.java