{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"ty::ExistentialPredicate::Trait(trait_ref)"}]}
        ty::ExistentialPredicate::Trait(trait_ref) => {
    match predicate.as_ref().skip_binder() {
            let name = encode_ty_name(tcx, trait_ref.def_id);