public static void MoveDown(this IList <object> List, int Index) => ListExtensions.Move(List, Index, ++Index);
public static void MoveDown <T>(this IList <T> List, int Index) where T : CRUDObject => ListExtensions.Move(List, Index, ++Index);
public static void MoveUp(this IList <object> List, int Index) => ListExtensions.Move(List, Index, --Index);