### Question:
TaskRequestHandler { public void destroy() { executor.shutdownNow(); } private  TaskRequestHandler(); static TaskRequestHandler getInstance(); void initailizeServerThreadPool(); void initailizeMonitoringThreadPool(); void executeServerTask( TaskType type, TaskResponse node ); void executeMonitorTask( TaskType type, TaskResponse node ); void shutMonitoring(); void restratMonitoring(); void destroy(); public CompletionService<TaskResponse> taskCompService; public CompletionService<TaskResponse> monitorCompService; }### Answer:
@Test public void testDestroy() { System.out.println( "destroy" ); TaskRequestHandler result = TaskRequestHandler.getInstance(); result.destroy(); }