{"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"tcx.mk_poly_existential_predicates(&predicate.internal(tables,"}]}
                tcx.mk_poly_existential_predicates(&predicate.internal(tables, tcx)),
            RigidTy::Dynamic(predicate, region, dyn_kind) => rustc_ty::TyKind::Dynamic(
                region.internal(tables, tcx),