NServiceBus.MessagePump.Stop C# (CSharp) Method

        public async Task Stop()
        {
            cancellationTokenSource.Cancel();

            // ReSharper disable once MethodSupportsCancellation
            var timeoutTask = Task.Delay(TimeSpan.FromSeconds(30));
            var allTasks = runningReceiveTasks.Values.Concat(new[]
            {
                messagePumpTask
            });
            var finishedTask = await Task.WhenAny(Task.WhenAll(allTasks), timeoutTask).ConfigureAwait(false);

            if (finishedTask.Equals(timeoutTask))
            {
                Logger.Error("The message pump failed to stop with in the time allowed(30s)");
            }

            concurrencyLimiter.Dispose();
            runningReceiveTasks.Clear();
            inputQueue.Dispose();
            errorQueue.Dispose();
        }