specific async pattern implementation query about oatpp HOT 4 OPEN

oatpp::async::Lock lock;
oatpp::async::ConditionVariable cv;

class TestCoroutineWait : public oatpp::async::Coroutine<TestCoroutineWait> {
private:
  std::shared_ptr<Resource> m_resource;
  oatpp::async::LockGuard m_lockGuard; // Use async::LockGuard to guard the lock
  oatpp::async::ConditionVariable* m_cv;
public:

  TestCoroutineWait(std::shared_ptr<Resource> resource,
                    oatpp::async::Lock* lock,              // pass async::Lock to coroutine
                    oatpp::async::ConditionVariable* cv)   // pass async::ConditionVariable to coroutine
    : m_resource(resource)
    , m_lockGuard(lock)
    , m_cv(cv)
  {}

  Action act() override {
    return m_cv->wait(m_lockGuard, [this]{return m_resource->counter == 100;}) // long wait until counter == 100
            .next(yieldTo(&TestCoroutineWait::onReady));
  }

  Action onReady() {
    OATPP_ASSERT(m_lockGuard.owns_lock()) // Now coroutine owns the lock
    return finish();
  }

};

std::thread t([&resource, &lock, &cv] {
  { // very long operation
    std::lock_guard<oatpp::async::Lock> guard(lock);
    for(int i = 0; i < 100; i++) {
      resource->counter++;
    }
  }
  cv.notifyAll();
})