event EventHandler<object> IScrollSnapPointsInfo.HorizontalSnapPointsChanged
        {
            add
            {
                return EventRegistrationTokenTable<EventHandler<object>>
                        .GetOrCreateEventRegistrationTokenTable(ref this._horizontaltable)
                        .AddEventHandler(value);

            }
            remove
            {
                EventRegistrationTokenTable<EventHandler<object>>
                    .GetOrCreateEventRegistrationTokenTable(ref this._horizontaltable)
                    .RemoveEventHandler(value);
            }
        }