{"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"string_table:"}]}
    string_table: FxHashMap<std::borrow::Cow<'a, str>, u32>,
    work: VecDeque<(usize, tt::iter::TtIter<'a, S>)>,
    span_data_table: &'span mut S::Table,