TCC dubbo有没有注解暴露服务的例子！

@zhangthen 使用@Service暴露dubbo服务拿不到actionContext值！提交和回滚方法也不执行！出现：
Deadlock found when trying to get lock

Start by reproducing the reported TCC case using @Service to expose the Dubbo service. Check whether actionContext is available and whether the commit and rollback methods execute, then investigate the reported “Deadlock found when trying to get lock” failure. Done means the example or reproduction behaves correctly without the deadlock.

Written by the indexing model from the issue text.