public void AddRamdomNeighbour()
{
Node n = null;
if (nodes.Count >= 2)
{
n = net.GetRandomNeighbour(LastNode, nodes[nodes.Count - 2]);
}
else
{
n = net.GetRandomNeighbour(LastNode, null);
}
if (n != null)
{
AddNode(n);
}
}