public void RemoveGUIDrawable(GUIDrawable guiDrawable)
 {
     guiDrawables.Remove(guiDrawable);
 }
 public void AddGUIDrawable(GUIDrawable guiDrawable)
 {
     guiDrawables.Add(guiDrawable);
     guiDrawables.Last().Load(contentManager);
     guiDrawables.Last().ParentPosition = Position;
 }