@Override
    protected AWSElasticsearch build(AwsSyncClientParams params) {
        return new AWSElasticsearchClient(params);
    }
Construct a synchronous implementation of AWSElasticsearch using the current builder configuration.

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