private void MakePastDue(Subscription subscription, int numberOfDays)
{
BraintreeService service = new BraintreeService(gateway.Configuration);
NodeWrapper response = new NodeWrapper(service.Put(service.MerchantPath() + "/subscriptions/" + subscription.Id + "/make_past_due?days_past_due=" + numberOfDays));
Assert.IsTrue(response.IsSuccess());
}
}