digraph emptyWhen_kt {
    graph [nodesep=3]
    node [shape=box penwidth=2]
    edge [penwidth=2]

    subgraph cluster_0 {
        color=red
        0 [label="Enter function test_1" style="filled" fillcolor=red];
        subgraph cluster_1 {
            color=blue
            1 [label="Enter block"];
            subgraph cluster_2 {
                color=blue
                2 [label="Enter when"];
                3 [label="Synthetic else branch"];
                4 [label="Exit when"];
            }
            5 [label="Exit block"];
        }
        6 [label="Exit function test_1" style="filled" fillcolor=red];
    }
    0 -> {1};
    1 -> {2};
    2 -> {3};
    3 -> {4};
    4 -> {5};
    5 -> {6};

    subgraph cluster_3 {
        color=red
        7 [label="Enter function test_2" style="filled" fillcolor=red];
        subgraph cluster_4 {
            color=blue
            8 [label="Enter block"];
            subgraph cluster_5 {
                color=blue
                9 [label="Enter when"];
                10 [label="Access variable R|<local>/x|"];
                11 [label="Synthetic else branch"];
                12 [label="Exit when"];
            }
            13 [label="Exit block"];
        }
        14 [label="Exit function test_2" style="filled" fillcolor=red];
    }
    7 -> {8};
    8 -> {9};
    9 -> {10};
    10 -> {11};
    11 -> {12};
    12 -> {13};
    13 -> {14};

    subgraph cluster_6 {
        color=red
        15 [label="Enter function test_3" style="filled" fillcolor=red];
        subgraph cluster_7 {
            color=blue
            16 [label="Enter block"];
            subgraph cluster_8 {
                color=blue
                17 [label="Enter when"];
                18 [label="Access variable R|<local>/x|"];
                19 [label="Variable declaration: lval y: R|kotlin/Int|"];
                20 [label="Synthetic else branch"];
                21 [label="Exit when"];
            }
            22 [label="Exit block"];
        }
        23 [label="Exit function test_3" style="filled" fillcolor=red];
    }
    15 -> {16};
    16 -> {17};
    17 -> {18};
    18 -> {19};
    19 -> {20};
    20 -> {21};
    21 -> {22};
    22 -> {23};

}