{"ast_node_type":"variable","tokens":[{"end":63,"kind":"keyword","start":0,"text":"let"}]}
    let (first_arm, second_arm) = (arms.next()?, arms.next()?);
    let mut arms = match_arm_list.arms();
    if arms.next().is_some() || first_arm.guard().is_some() || second_arm.guard().is_some() {