public async Task Handle(AccountUserNameUpdated notification, CancellationToken cancellationToken)
        {
            var tosses = (await(await cosmosDBTemplate.CreateDocumentQuery())
                          .Where(t => t.UserId == notification.User.Id)
                          .AsDocumentQuery()
                          .GetAllResultsAsync())
                         .ToList();

            foreach (var item in tosses)
            {
                item.UserName = notification.User.UserName;
                await cosmosDBTemplate.Update(item);
            }
        }
        public async Task Handle(SponsoredTossDisplayed notification, CancellationToken cancellationToken)
        {
            var toss = (await cosmosDBTemplate.CreateDocumentQuery())
                       .Where(t => t.Id == notification.TossId)
                       .Take(1)
                       .AsEnumerable()
                       .FirstOrDefault();

            //we displayed a now removed
            if (toss == null)
            {
                return;
            }
            toss.DecreaseDisplayCount();
            await cosmosDBTemplate.Update(toss);
        }