### Question:
AopPlugin implements Plugin { @Override public void start() { Singleton.getAll().forEach( bean -> ClassUtils.getMethodsAnnotatedWith(bean.getClass(), Aspect.class) .forEach(method -> handleMethod(method, bean))); ProxyStore.init(); }  @Override int order(); @Override void start(); @Override void stop();  }### Answer:
@Test public void test() { Bootstrap.start(); Conf conf = Singleton.get(Conf.class); Assert.assertNotNull(conf); conf.print(); }