{"ast_node_type":"variable","tokens":[{"end":69,"kind":"keyword","start":0,"text":"let"}]}
                let id = LifetimeParamId { parent: *self, local_id };
            for (local_id, ast_param) in lts_idx_iter.zip(generic_params_list.lifetime_params()) {
                res[keys::LIFETIME_PARAM].insert(AstPtr::new(&ast_param), id);