This code takes a Sem monad with a State effect in it, and turns it into a StateT monad with an inner monad of Sem and al l the other effects. I have never use

This code takes a Sem monad with a State effect in it, and turns it into a StateT monad with an inner monad of Sem and al l the other effects. I have never user Polysemy, any effects library, or type-level lists before, but I'm reasonably sure my guess is right, despite not understanding any of the code.