{"ast_node_type":"variable","tokens":[{"end":95,"kind":"keyword","start":0,"text":"let"}]}
        let next = start.as_u32().checked_add(1).expect("input too large; ran out of NodeIds");
        let start = self.resolver.next_node_id;
        self.resolver.next_node_id = ast::NodeId::from_u32(next);