{"ast_node_type":"variable","tokens":[{"end":15,"kind":"keyword","start":0,"text":"let"}]}
    let graph =
fn test_double_cycle_max() {
        TestGraph::new(0, &[(0, 1), (1, 2), (1, 4), (2, 3), (2, 4), (3, 5), (4, 1), (5, 4)]);