{"ast_node_type":"variable","tokens":[{"end":95,"kind":"keyword","start":0,"text":"if"}]}
        if let Some((f1_name, f1_span)) = enabled_features.clone().find(|(name, _)| name == f1)
    {
            && let Some((f2_name, f2_span)) = enabled_features.clone().find(|(name, _)| name == f2)