private void RemoveTracker(TechType techType)
        {
            tracked.Remove(techType);

            foreach (Transform child in transform)
            {
                BlueprintTrackerEntry entry = child.GetComponent <BlueprintTrackerEntry>();
                if (entry != null && entry.techType == techType)
                {
                    Destroy(child.gameObject);
                    break;
                }
            }

            LogStatus();
        }
 private void AddTracker(TechType techType)
 {
     tracked.Add(techType);
     BlueprintTrackerEntry.Create(transform, techType);
     LogStatus();
 }