{"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"self.next_node_id"}]}
        self.next_node_id = ast::NodeId::from_usize(end);
        let end = start.as_usize().checked_add(count).expect("input too large; ran out of NodeIds");
        start..self.next_node_id