### Question:
ZKClient { public ZKClient(String string) throws IOException { zkClient = new ZooKeeper(string, 30000, new ZKWatcher()); } ZKClient(String string); void registerService(String path, String data); void unregisterService(String path); List<String> listServices(String path); String getServiceData(String path);  }### Answer:
@Test public void testzkClient() throws Exception { test("/some/test"); }