public State Search(string startNodeName, string endNodeName)
        {
            Node startNode = Program.instance.graph[startNodeName];
            Node endNode = Program.instance.graph[endNodeName];

            List<State> stanjaZaObradu = new List<State>();

            stanjaZaObradu.Add(new State(startNode));

            for (int i = 0; i < MaxLevel; i++)
            {
                while (stanjaZaObradu.Count > 0)
                {
                    State naObradi = stanjaZaObradu[0];
                    stanjaZaObradu.Remove(naObradi);

                    if (naObradi.Node.Name == endNode.Name)
                    {
                        return naObradi;
                    }
                    else
                    {
                        List<State> mogucaSledecaStanja = naObradi.children();
                        Console.WriteLine(mogucaSledecaStanja.Count);
                        foreach (var stanje in mogucaSledecaStanja)
                        {

                            if (i <= stanje.Level)
                            {
                                stanjaZaObradu.Insert(0, stanje);
                            }

                        }
                }
            }
            }
            return null;
        }