{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"PredicatePolarity,"}]}
    PredicatePolarity, Region, RegionKind, ReprOptions, TraitObjectVisitor, Ty, TyKind, TyVid,
    Pattern, PatternKind, PolyExistentialPredicate, PolyFnSig, Predicate, PredicateKind,
    ValTree, ValTreeKind, Visibility,