public void GetOrderItemTest()
        {
            var os    = new OpenStackMember(UserName, Password, TenantName); // with tenant
            var items = os.ListOrderItems();

            Assert.IsNotNull(items);
            foreach (var i in items)
            {
                var item = os.GetOrderItem(i.Id);
                Assert.IsNotNull(item);
                Trace.WriteLine(string.Format("ItemId : {0}", item.Id));
                Trace.WriteLine(string.Format("ServiceName : {0}", item.ServiceName));
                Trace.WriteLine(string.Format("ItemStatus : {0}", item.Status));
                Trace.WriteLine(string.Format("ServiceStartDate : {0}", item.ServiceStartDate));
                Trace.WriteLine(string.Format("ProductName : {0}", item.ProductName));
                Trace.WriteLine(string.Format("ProductName : {0}", item.UnitPrice));
            }
        }