private void SumAndPublish(IList <ShoppingList> allLists)
        {
            var done  = allLists.Sum(d => d.NumberOfCompletedItems);
            var total = allLists.Sum(d => d.NumberOfItems);
            var sd    = new SummaryData()
            {
                TotalItems = total,
                DoneItems  = done
            };

            TinyPubSub.Publish <SummaryData>("SummaryData", sd);
        }
 public void Post()
 {
     TinyPubSub.Publish(Topics.Orders, "A little bit of event data");
 }