{"ast_node_type":"variable","tokens":[{"end":88,"kind":"keyword","start":0,"text":"}"}]}
    } else if let Some(hir::FnSig { header, decl, span: fn_sig_span }) = node.fn_sig() {
        fcx.write_ty(id, ty);
        let fn_sig = if decl.output.is_suggestable_infer_ty().is_some() {