如何检查JavaHighLevelRestClient实例的运行？

Question

是否有一种解决方案，可以像这样用java-high-level-rest-client检查elasticsearch的运行情况：

RestHighLevelClient client = new RestHighLevelClient(
                    RestClient.builder(new HttpHost(address, port, "http")));
if(isRunning(client)){
//some code
}