public async Task clear_stream_state_errors()
        {
            var mockStreamStateRepo = new Mock <IStreamStateRepo>();
            var options             = new SubscriberOptions(new List <SubscriptionStreamId>());
            var subscriber          = new Subscriber(NullStandardLogger.Instance, null, null, null, null, null, mockStreamStateRepo.Object, options);

            await subscriber.ClearStreamStateErrorsAsync();

            mockStreamStateRepo.Verify(x => x.ClearStreamStateErrorsAsync());
        }