public void Verify_identity_Translation()
        {
            TestMapper    sut            = new TestMapper(_db, _identityManager);
            MyAggregateId id             = new MyAggregateId(_seed++);
            var           mappedIdentity = sut.MapIdentity(id);

            var reverseMap = sut.ReverseMap(mappedIdentity);

            Assert.That(reverseMap, Is.EqualTo(id.AsString().ToLowerInvariant()));
        }