{"ast_node_type":"variable","tokens":[{"end":86,"kind":"keyword","start":0,"text":"let"}]}
        let mut iter = [id].into_iter().chain(self.hir_parent_id_iter(id)).peekable();
        // Return `None` if the `id` expression is not the returned value of the enclosing body
        while let Some(cur_id) = iter.next() {