public async void should_lock_resource()
        {
            var lockId = Guid.NewGuid().ToString();

            await _subject.Start();

            var first = await _subject.AcquireLock(lockId);

            var second = await _subject.AcquireLock(lockId);

            await _subject.Stop();

            Assert.True(first);
            Assert.False(second);
        }