public Product GetById(int id)
 {
     var auth = this.AuthenticationInformation;
     var api = new FulfillmentProductsApi(auth.UserName, auth.Password);
     return api.GetById(id);
 }
 public List<Product> Get()
 {
     var auth = this.AuthenticationInformation;
     var api = new FulfillmentProductsApi(auth.UserName, auth.Password);
     return api.Get().ToList();
 }