private static void OnMaxPointsCountChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            AdjustablePointSelector owner = (AdjustablePointSelector)d;

            owner.OnMaxPointsCountChanged();
        }
        private static void OnAllowedRegionChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            AdjustablePointSelector owner = (AdjustablePointSelector)d;

            owner.OnAllowedRegionChanged();
        }