}
template <typename BatonType>
template <typename Rep, typename Period>
bool TimedRWMutex<BatonType>::timed_read_lock(
const std::chrono::duration<Rep, Period>& duration) {
}
template <typename BatonType>
template <typename Rep, typename Period>
bool TimedRWMutex<BatonType>::timed_read_lock(
const std::chrono::duration<Rep, Period>& duration) {