{"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"if"}]}
        if index == 0 || index > body.arg_count {
    body.locals().iter().enumerate().try_for_each(|(index, local)| -> io::Result<()> {
            writeln!(writer, "    let {}_{}: {};", pretty_mut(local.mutability), index, local.ty)