{"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"Some(a)"}]}
                Some(a) => Some(a.or(tcx, b.instantiate_opt(tcx, args).unwrap_or(b))),
                Some(InhabitedPredicate::True) => Some(InhabitedPredicate::True),
            },