{"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"ty::Infer(ty::TyVar(_))"}]}
            ty::Infer(ty::TyVar(_)) => "inferred type".into(),
            ty::CoroutineWitness(..) => "coroutine witness".into(),
            ty::Infer(ty::IntVar(_)) => "integer".into(),