{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"Node::Item(hir::Item"}]}
            Node::Item(hir::Item { kind: hir::ItemKind::Fn { sig: fn_sig, .. }, .. }) => {
        match tcx.hir_node_by_def_id(def_id.expect_local()) {
                Some(fn_sig.decl.output.span())