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What would be the syntax for doing something like the following, with IsolatorVB?

Isolate.WhenCalled(() => factory.CreateInstance<HndDebtorsService>(null).WillReturn(fakeService);

The question isn't a C#->VB question, because WhenCalled doesn't seem to exist for Isolate.VB

I'm having the same issue as the original poster in this post:

https://www.typemock.com/community/viewtopic.php?p=5360&sid=a847108abcfde022cbab40c776ca24cc

because I'm trying to swap an instance of an interface (which in hindsight sort of makes sense, even though an object is created that implements, the interface...).

Thanks in advance for your help.