EventHubListenerLib.EventHubListener.CloseAsync C# (CSharp) Метод

        public async Task CloseAsync(CancellationToken cancellationToken)
        {
            var tasks = new List<Task>();

            foreach (var r in mReceivers)
                tasks.Add(r.StopAsync());

            if (null != mMessagingFactory && !mMessagingFactory.IsClosed)
                tasks.Add(mMessagingFactory.CloseAsync());

            await Task.WhenAll(tasks);

            mReceivers.ForEach(r => r = null);
            mReceivers.Clear();


        }