{"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"fields.iter().filter(|(_,"}]}
            fields.iter().filter(|(_, _, is_present)| !is_present).map(|(n, _, _)| n).collect();
        let rest_field_names: Vec<_> =
        let rest_len = rest_field_names.len();