public String getSubscriptionDurability() {
        if (!isEmpty(subscriptionDurability)) {
            return subscriptionDurability;
        }
        return null;
    }
@Test(timeout = 60000)
    public void testDefaultSubscriptionDurabilitySetCorrectly() {
        assertEquals("Incorrect default value", ActiveMQActivationSpec.NON_DURABLE_SUBSCRIPTION, activationSpec.getSubscriptionDurability());
    }