class MyDestructionAwareBeanPostProcessor implements DestructionAwareBeanPostProcessor {

    @Override
    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {<FILL_FUNCTION_BODY>}

    @Override
    public void postProcessBeforeDestruction(Object bean, String beanName) throws BeansException {
        if (bean instanceof ConnectionServiceImpl) {
            ((ConnectionServiceImpl) bean).closeConnection();
        }
    }

    @Override
    public boolean requiresDestruction(Object bean) {
        return (bean instanceof ConnectionServiceImpl);
    }
}

        if (bean instanceof ConnectionServiceImpl) {
            ((ConnectionServiceImpl) bean).openConnection();
        }
        return bean;
    
<no_super_class>