{
Collection<String> beanXmls = new ArrayList<String>();
Collection<Class<?>> beanClasses = new ArrayList<Class<?>>();
addExtension(new AddObserverMethodExtension());
addExtension(new AddObserverMethodExtension.MyBeanExtension());
startContainer(beanClasses, beanXmls);
Assert.assertNotNull(AddObserverMethodExtension.MyBeanExtension.observerMethod);