public string CreateGraph()
{
string data = "digraph {" + Environment.NewLine + "rankdir = LR;" + Environment.NewLine + "\"\" [shape = none]";
foreach (State state in ListStates)
{
data += Environment.NewLine + state.CreateGraph();
}
data += Environment.NewLine;
data += Environment.NewLine + $"\"\" -> \"" + ListStates.Find(x => x.IsInitial).State_Name + "\"";
foreach (Transition transition in ListTransitions)
{
data += Environment.NewLine + transition.CreateGraph();
}
data += Environment.NewLine + "}";
return(data);
}