Reflection says that interface method are virtual in the implemented type, when they aren't?

All methods declared in an interface are marked as virtual abstract and all methods that implement interface methods in classes are marked as virtual final so the CLR knows it can't just call them directly - it has to do vtable lookups at runtime to call the right implementation. The interface implementations are still virtual, but you can't override them as they're final.

I believe when you implement an interface, the methods you inherit from the interface are automatically marked as virtual, so the logic's fine, and you don't need the test.

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