{"ast_node_type":"variable","tokens":[{"end":49,"kind":"keyword","start":0,"text":"let"}]}
        let (pats, input) = iterator_input(pats);
    pub fn tuple_pat(&self, pats: impl IntoIterator<Item = ast::Pat>) -> ast::TuplePat {
        let ast = make::tuple_pat(pats).clone_for_update();