public static Graph.Structure open(string _path)
        {
            _path = File.ReadAllText(_path);
            Graph.Structure tmpStructure = JsonConvert.DeserializeObject <Graph.Structure>(_path);

            return(tmpStructure);
        }
        public static void save(Graph.Structure tmpStructure, string _name)
        {
            string jsonToSave = JsonConvert.SerializeObject(tmpStructure, Formatting.Indented);

            File.WriteAllText(_name, jsonToSave);
        }