{"ast_node_type":"variable","tokens":[{"end":95,"kind":"keyword","start":0,"text":"let"}]}
                let arg = ResolvedArg::late(initial_bound_vars + late_bound_idx as u32, param);
            trait_ref.bound_generic_params.iter().enumerate().map(|(late_bound_idx, param)| {
                bound_vars.insert(param.def_id, arg);