{"ast_node_type":"other","tokens":[{"end":35,"kind":"keyword","start":0,"text":"iter.filter_map(|tt|"}]}
    iter.filter_map(|tt| match tt {
fn parse_comma_sep<S>(iter: TtIter<'_, S>) -> Vec<Symbol> {
        TtElement::Leaf(tt::Leaf::Literal(tt::Literal {