{"ast_node_type":"other","tokens":[{"end":34,"kind":"keyword","start":0,"text":".filter_map(|mut"}]}
        .filter_map(|mut tokens| {
        .filter_map(|(is_sep, group)| (!is_sep).then_some(group))
            syntax::hacks::parse_expr_from_str(&tokens.join(""), Edition::CURRENT).and_then(