void _DeserializeToInfo(string json)
        {
            var info = JsonConvert.DeserializeObject <FocusUnlockerSaveInfo>(json);

            focusUnlocker = GetComponent <FocusUnlocker>();

            if (focusUnlocker)
            {
                focusUnlocker.IsUsed = info.isUsed;
            }
        }
        void _SerializeToJson()
        {
            var info = new FocusUnlockerSaveInfo();

            focusUnlocker = GetComponent <FocusUnlocker>();

            if (focusUnlocker)
            {
                info.isUsed = focusUnlocker.IsUsed;
            }

            json = JsonConvert.SerializeObject(info, Formatting.None);
        }