public void testAnnotatedMXBean() throws Exception {
   if (JdkVersion.getMajorJavaVersion() < JdkVersion.JAVA_16) {
     return;
   }
   FooX foo = new FooX();
   assertTrue("MXBean annotation not detected correctly", JmxUtils.isMBean(foo.getClass()));
 }
  /**
   * Registers the component specifying the info that describes it.
   *
   * <p>Certain interfaces are automatically detected. If the component implements {@code
   * Lifecycle}, it will be registered as though using {@link #registerLifecycle(Lifecycle)}. If it
   * implements {@code ServletContextAware}, then it will be registered as though using {@link
   * #registerServletContextAware(ServletContextAware)}. If it implements {@code InitializingBean},
   * then it will be initialized as though using {@link #initialize(InitializingBean)}.
   *
   * <p>If the component implements {@code FactoryBean}, it will be checked for the automatically
   * detected interfaces before the factory is evaluated. The evaluated factory will then be
   * registered, and the resulting object will again be checked for automatically detected
   * interfaces.
   *
   * @param info the component info to register, not null
   * @param instance the component instance to register, not null
   * @throws IllegalArgumentException if unable to register
   */
  public void registerComponent(final ComponentInfo info, Object instance) {
    ArgumentChecker.notNull(info, "info");
    ArgumentChecker.notNull(instance, "instance");
    checkStatus(Status.CREATING);

    final ComponentKey key = info.toComponentKey();
    try {
      // initialize
      initialize0(instance);
      registerInstanceInterfaces0(instance);

      // handle factories
      if (instance instanceof FactoryBean<?>) {
        try {
          instance = ((FactoryBean<?>) instance).getObject();
        } catch (final Exception ex) {
          throw new OpenGammaRuntimeException("FactoryBean threw exception", ex);
        }
        initialize0(instance);
        registerInstanceInterfaces0(instance);
      }

      // register into data structures
      final Object current = _instanceMap.putIfAbsent(key, instance);
      if (current != null) {
        throw new IllegalArgumentException(
            "Component already registered for specified information: " + key);
      }
      _infoMap.putIfAbsent(info.getType(), new ComponentTypeInfo(info.getType()));
      final ComponentTypeInfo typeInfo = getTypeInfo(info.getType());
      typeInfo.getInfoMap().put(info.getClassifier(), info);
      registeredComponent(info, instance);

      // If the component being registered is also an MBean, then register it as such
      if (JmxUtils.isMBean(instance.getClass())) {
        registerMBean(instance);
      }
    } catch (final RuntimeException ex) {
      _status.set(Status.FAILED);
      throw new RuntimeException("Failed during registration: " + key, ex);
    }
  }