{"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"None"}]}
                None => b.instantiate_opt(tcx, args).map(|b| a.and(tcx, b)),
            Self::And(&[a, b]) => match a.instantiate_opt(tcx, args) {
                Some(InhabitedPredicate::False) => Some(InhabitedPredicate::False),