private static void AddEdgeWithLabel(NetStreamSender stream, string sourceId, ref ulong timeId, string name, string nodeFrom, string nodeTo)
{
if (lastEdge != null)
stream.RemoveEdgeAttribute(sourceId, timeId++, lastEdge, "ui.class");
stream.AddEdge(sourceId, timeId++, name, nodeFrom, nodeTo, false);
stream.AddEdgeAttribute(sourceId, timeId++, name, "ui.label", name);
stream.AddEdgeAttribute(sourceId, timeId++, name, "ui.class", "active");
lastEdge = name;
}