Method TrySetException

library/cpp/threading/future/core/future-inl.h:860–863

    template <typename T>
    inline bool TPromise<T>::TrySetException(std::exception_ptr e) {
        EnsureInitialized();
        return State->TrySetException(std::move(e));
    }

    template <typename T>
    inline TFuture<T> TPromise<T>::GetFuture() const {