{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"None"}]}
                None => b.instantiate_opt(tcx, args).map(|b| a.or(tcx, b)),
            Self::Or(&[a, b]) => match a.instantiate_opt(tcx, args) {
                Some(InhabitedPredicate::True) => Some(InhabitedPredicate::True),