{"ast_node_type":"variable","tokens":[{"end":80,"kind":"keyword","start":0,"text":"let"}]}
            let def_map = CrateRootModuleId::from(trait_.krate(db)).def_map(db);
        AssocItemId::TypeAliasId(it) => {
            if def_map.is_unstable_feature_enabled(&intern::sym::generic_associated_type_extended) {