{"ast_node_type":"variable","tokens":[{"end":85,"kind":"keyword","start":0,"text":"let"}]}
    let mut annotations = MinMaxes(IndexVec::new(), |w| MinMaxIn { min: w, max: w });
    let graph = TestGraph::new(0, &[(0, 1), (0, 2), (1, 3), (3, 0), (3, 4), (4, 3), (3, 5)]);
    let sccs = Sccs::new_with_annotation(&graph, &mut annotations);