public void CombineValue()
        {
            _serializedIDPropertyStub.Stub(stub => stub.CombineValue(_columnValueProviderStub)).Return(DomainObjectIDs.Order1.ToString());

            var result = _serializedObjectIDStoragePropertyDefinition.CombineValue(_columnValueProviderStub);

            Assert.That(result, Is.TypeOf(typeof(ObjectID)));
            Assert.That(((ObjectID)result).Value.ToString(), Is.EqualTo(DomainObjectIDs.Order1.Value.ToString()));
            Assert.That(((ObjectID)result).ClassID, Is.EqualTo("Order"));
        }