### Question:
RestVMClient { public void close() { client.destroy(); } RestVMClient(String applicationName, String deploymentId); void setResourcePath(String applicationName, String deploymentId); T getEnergySample(Class<T> responseType, String vmId, String eventId, String startTime, String interval, String endTime); T getPowerConsumption(Class<T> responseType, String vmId, String startTime, String endTime); T getCostEstimation(Class<T> responseType, String vmId, String eventId); T getVM(Class<T> responseType, String vmId); ClientResponse postVM(Object requestEntity); T getEnergyConsumption(Class<T> responseType, String vmId, String startTime, String endTime); ClientResponse deleteVM(String vm_id); T getVMs(Class<T> responseType); T getEnergyEstimation(Class<T> responseType, String vmId, String duration); T getEventPowerConsumption(Class<T> responseType, String vmId, String eventId, String startTime, String endTime); T getPowerEstimationForAnEvent(Class<T> responseType, String vmId, String eventId); T getPowerEstimation(Class<T> responseType, String vmId); T getEventEnergyConsumption(Class<T> responseType, String vmId, String eventId, String startTime, String endTime); T getEnergyEstimationForAnEvent(Class<T> responseType, String vmId, String eventId, String duration); void close();  }### Answer:
@Test public void testClose() { System.out.println("close"); RestVMClient instance = null; instance.close(); fail("The test case is a prototype."); }