digraph nlpMessagingGenerator {
    overlap=scale;
    splines=true;
    layers="process:errors";
    rankdir=TD;
    concentrate=true;
        
    node [shape=box, style="rounded,filled", layer=all, fillcolor="darkslategray3"];
    edge [layer=all];
    
    start [label="", shape=circle, fillcolor=black, fixedsize=true, width=0.2];
    
    readXml [label="Read XML"];
    retrieveNextCommType [label="Retrieve next\nCommunication Type"];
    checkCommType[label="Check whether\nCommunication Type\nexists", fillcolor="orange", shape="diamond"];
    // beginTransaction[label="Begin transaction", fillcolor="#D2D263"];
    createCommType[label="Create Communication Type"];
    createTemplate[label="Create Template"];
    // commitTransaction[label="Commit transaction", fillcolor="#D2D263"];
    // rollbackTransaction[label="Rollback transaction", fillcolor="#D2D263"];

    error [label="Error", layer="error", fillcolor="red"];

    end [label="", shape=doublecircle, fillcolor="black", fixedsize=true, width=0.2];

    start -> readXml [label="0"];
    readXml -> retrieveNextCommType [label="0"];
    readXml -> error [label="-1", layer="error", color="gray85", fontcolor="gray85"];
    retrieveNextCommType -> checkCommType [label="0", decorate="true"];
    retrieveNextCommType -> end[label="1", color="darkgoldenrod4", fontcolor="darkgoldenrod4"];
    retrieveNextCommType -> error [label="-1", layer="error", color="gray85", fontcolor="gray85"];
    checkCommType -> retrieveNextCommType[label="0"];
    // checkCommType -> beginTransaction[label="1", color="darkgoldenrod4", fontcolor="darkgoldenrod4"];
    checkCommType -> createCommType[label="1", color="darkgoldenrod4", fontcolor="darkgoldenrod4"];
    checkCommType -> error[label="-1", layer="error", color="gray85", fontcolor="gray85"];
    // beginTransaction -> createCommType[label="1", color="darkgoldenrod4", fontcolor="darkgoldenrod4"];
    // beginTransaction -> error[label="-1", layer="error", color="gray85", fontcolor="gray85"];
    createCommType -> createTemplate [label="0"];
    // createCommType -> rollbackTransaction [label="-1", layer="error", color="gray85", fontcolor="gray85"];
    createCommType -> error [label="-1", layer="error", color="gray85", fontcolor="gray85"];
    // createTemplate -> commitTransaction [label="0"];
    createTemplate -> retrieveNextCommType [label="0"];
    // createTemplate -> rollbackTransaction [label="-1", layer="error", color="gray85", fontcolor="gray85"];
    createTemplate -> error [label="-1", layer="error", color="gray85", fontcolor="gray85"];
    // commitTransaction -> retrieveNextCommType [label="0"];
    // commitTransaction -> rollbackTransaction [label="-1", layer="error", color="gray85", fontcolor="gray85"];
    // rollbackTransaction -> error [label="0"];
    // rollbackTransaction -> error [label="-1", layer="error", color="gray85", fontcolor="gray85"];
    error -> end[label="0", layer="error", color="gray85", fontcolor="gray85", fontcolor="gray85", fontcolor="gray85"];
}