public async Task <GetDefaultCategoryTreeIdResponse> GetDefaultCategoryTreeId(GetDefaultCategoryTreeIdRequest request)
        {
            string url = "commerce/taxonomy/v1_beta/get_default_category_tree_id?marketplace_id={0}";

            RestHelper helper   = new RestHelper(string.Format(url, request.marketplace_id));
            var        response = await helper.Get();

            GetDefaultCategoryTreeIdResponse getFulfillmentPolicyByNameResponse = JsonConvert.DeserializeObject <GetDefaultCategoryTreeIdResponse>(response);

            return(getFulfillmentPolicyByNameResponse);
        }
        public void GetDefaultCategoryTreeIdTest()
        {
            TaxonomyApiService taxonomyApiService = new TaxonomyApiService();
            var request = new GetDefaultCategoryTreeIdRequest();

            request.marketplace_id = MarketplaceIdEnum.EBAY_US;
            string Id = request.marketplace_id.ToString();
            GetDefaultCategoryTreeIdResponse response = taxonomyApiService.GetDefaultCategoryTreeId(request).Result;

            Assert.IsNotNull(response);
        }