public static void DecrementOffset(this IScrollableUIElement element, Vector vector)
 {
     element.Offset -= vector;
 }
 public OffsetAnimationActuator(IScrollableUIElement scrollableUIElement, VectorAnimation animation)
 {
     _scrollableUIElement = scrollableUIElement;
     _doubleAnimation     = animation ?? throw new ArgumentNullException(nameof(animation));
 }