{"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"Some(ty::ImplTraitInTraitData::Impl"}]}
        Some(ty::ImplTraitInTraitData::Impl { fn_def_id }) => {
    match tcx.opt_rpitit_info(def_id.to_def_id()) {
            match tcx.collect_return_position_impl_trait_in_trait_tys(fn_def_id) {