{"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"[param_a,"}]}
        [param_a, param_b] => Cow::Owned(format!("= {:?},{:?}", param_a, param_b)),
        [param] => Cow::Owned(format!("= {:?}", param)),
        params => Cow::Owned(format!(