public string GetItems(string data)
        {
            FindItemsInEBayStoreRequest storeRequest = JsonConvert.DeserializeObject<FindItemsInEBayStoreRequest>(data);
            if (storeRequest != null)
            {
                Store store = new Store();
                storeRequest.StoreName = "Beautiful Hearth";
                var response = store.FindItemsInStore(storeRequest);

                if (response == null)
                {
                    response = new FindItemsInEBayStoreResponse();
                }

                if (response.items == null)
                {
                    response.items = new List<FindEBayItemResponse>();
                    response.items.Add(new FindEBayItemResponse());
                }

                return JsonConvert.SerializeObject(response.items[0]);
            }

            return null;
        }
        public string GetFeedback()
        {
            GetFeedbackRequest storeRequest = new GetFeedbackRequest();
            Store store = new Store();
            storeRequest.FeedbackType = FeedbackTypeCodeType.FeedbackReceived;
            storeRequest.DetailLevel = DetailLevelCodeType.ReturnAll;
            var response = store.GetFeedback(storeRequest);

            if (response == null)
            {
                response = new GetFeedbackResponse();
            }

            if (response.FeedbackDetailArray == null)
            {
                response.FeedbackDetailArray = new FeedbackDetailType[] { };
            }

            return JsonConvert.SerializeObject(response);
        }