private void verifyPendingSubscription(final Subscription subscription) {
   Subscription pending = subscription.getPendingSubscription();
   Assert.assertEquals(pending.getPlan().getPlanCode(), "silver");
   Assert.assertEquals(pending.getPlan().getName(), "Silver plan");
   Assert.assertEquals(pending.getUnitAmountInCents(), (Integer) 400);
   Assert.assertEquals(pending.getQuantity(), (Integer) 1);
   Assert.assertEquals(pending.getAddOns().size(), 0);
 }