{"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"RigidTy::Dynamic(predicate,"}]}
            RigidTy::Dynamic(predicate, region, dyn_kind) => rustc_ty::TyKind::Dynamic(
            ),
                tcx.mk_poly_existential_predicates(&predicate.internal(tables, tcx)),