{"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"//"}]}
        //     my_layer.with_filter(tracing_subscriber::filter::filter_fn(|metadata| {
        // let _g = tracing::subscriber::set_default(tracing_subscriber::registry().with(
        //         metadata.target().starts_with("hir_ty::variance")