{"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"fn_sig.inputs().iter().copied(),"}]}
        fn_sig.inputs().iter().copied(),
    ty::Binder::dummy(tcx.mk_fn_sig(
        recovered_ret_ty.unwrap_or_else(|| Ty::new_error(tcx, guar)),