public void Transactions_VoidOrder() { // Arrange var url = Settings.MultiSafePayUrl; var apiKey = Settings.ApiKey; var client = new MultiSafepayClient(apiKey, url); // Act var result = client.VoidOrder("62756f57-f24d-403e-b6ed-3c53961dc801", "Order Canceled"); // Assert Assert.IsNotNull(result); Assert.IsTrue(result.Success); }