public void WithAnActivationOrder_ThenAnEmailMemberEventIsPublishedToTheServiceBus_WithAnActivationTopic()
        {
            _membershipEmail.Apply(_mockActivationOrder.Object);

            _mockServiceBus.Verify(
                m => m.PublishEvent(It.Is <EmailMembershipOwner>(ma => VerifyMatch(ma, _membershipActivation, "activate"))),
                Times.Once());
        }