public void Notes_CanDelete()
        {
            // Arrange
            var subscription = Chargify.GetSubscriptionList().FirstOrDefault(s => s.Value.State == SubscriptionState.Active && Chargify.GetNotesForSubscription(s.Key) != null && Chargify.GetNotesForSubscription(s.Key).Any()).Value as Subscription;

            Assert.IsNotNull(subscription, "No suitable subscription could be found.");
            var notes = Chargify.GetNotesForSubscription(subscription.SubscriptionID);

            Assert.IsNotNull(notes.FirstOrDefault());

            // Act
            var result = Chargify.DeleteNote(subscription.SubscriptionID, notes.FirstOrDefault().Key);

            // Assert
            Assert.IsTrue(result);
        }