{"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"ExistentialPredicateStableCmpExt,"}]}
    ExistentialPredicateStableCmpExt, ExistentialProjection, ExistentialTraitRef,
    AliasTerm, ArgOutlivesPredicate, Clause, ClauseKind, CoercePredicate, ExistentialPredicate,
    HostEffectPredicate, NormalizesTo, OutlivesPredicate, PolyCoercePredicate,