public SpriteSheetAnimationEngine(ISpriteSheetAnimatable target)
     : base()
 {
     _target = target;
     if (_target is ISerializable)
     {
         ID = string.Concat(((ISerializable)_target).ID, "-spritesheet-animation-engine");
     }
 }
 public SpriteSheetAnimationEngine(ISpriteSheetAnimatable target)
     : base()
 {
     _target = target;
     if (_target is ISerializable) { ID = string.Concat(((ISerializable)_target).ID, "-spritesheet-animation-engine"); }
 }