damn, as I suspected, I'm an idiot :joy: I can't ...

# arrow-contributors

[Eugenio]

damn, as I suspected, I'm an idiot 😂
I can't use the form KindId(Either::class) because despite the fact that Either::class is constant, it's not exposed in the signature and is only available in the compiled code!
So I'll fall back to KindId<Either<*,*>>() 🤷‍♂️