I just wanted to make sure there is a built-in solution that would not require
hacks in the VM implementation. I suppose I have to go with that as there are
not much other options.
Could [variant](https://github.com/yglukhov/variant) help?
Not sure, why not patch the VM for this test?
Is there any way to do unsafe conversion of one ref object type to another in
VM? I can't do `cast[B](a)` in a macros (not for arbitrary types `'cast' from
tyRef to tyRef`). I tried doing it in several steps, like `a -> int -> b`, but
this does not work either, (`'cast' from tyInt to tyRef`).
A
