{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"(expr_collector.store.finish(),"}]}
    (expr_collector.store.finish(), expr_collector.source_map, params, bounds, type_ref)
        .map(|ty| expr_collector.lower_type_ref(ty, &mut ExprCollector::impl_trait_allocator));
}