{"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"//"}]}
            // Prefer an expression for reloop nodes (see definition above).
            .then_with(|| Ord::cmp(&graph[a].is_out_summable, &graph[b].is_out_summable))
            .then_with(|| Ord::cmp(&is_reloop_node[a], &is_reloop_node[b]).reverse())