public static QuestTree LoadFile()
    {
        QuestTree tree = new QuestTree();

        string[] files = Directory.GetFiles(Application.dataPath + "/Quests/", "*.json");

        foreach (string filepath in files)
        {
            StreamReader reader = new StreamReader(filepath, System.Text.Encoding.UTF8);
            string       json   = reader.ReadToEnd();

            Quest quest = new Quest();
            quest.fromJson(JSON.Parse(json));
            tree.AddQuest(quest);
            reader.Close();
        }
        return(tree);
    }