Task Async Helper Stub

zippyTheZebra.cs

  private IEnumerable<FakeOrder> CallServiceToFind(string query)
        {
            System.Threading.Thread.Sleep(1000);
            return orders.Where(p => p.ProjectName.ToLower().Contains(query.ToLower())).Take(400);
        }
        private Task<IEnumerable<FakeOrder>> _task { get; set; }
        public async Task FindOrder(string query,int chunks = 10,int wait = 1000)
        {
            try
            {
                _task?.Forget();
             _task =
                TaskAsyncHelper.FromResult(CallServiceToFind(query));

                await _task.ContinueWith(async task => {
                    await this.ChunkInvoke(task.Result, "results", 10, 250).ContinueWith(async completed => {
                        await this.Invoke(new {status = completed.Status, p = completed.Id}, "findorderstatus");
               });
            });
            }
            catch (Exception ex)
            {
                await this.InvokeError(ex, "FindOrder");
            }
        }