{"ast_node_type":"other","tokens":[{"end":89,"kind":"keyword","start":0,"text":"(_,"}]}
            (_, Res::SelfTyAlias { alias_to: impl_def_id, is_trait_impl: true, .. }) => {
        let bound = match (self_ty.kind(), self_ty_res) {
                // `Self` in an impl of a trait -- we have a concrete self type and a