public static Thickness GetArrowMargin([NotNull] System.Windows.Controls.MenuItem obj)
 {
     ValidationHelper.NotNull(obj, () => obj);
     ThicknessUtil.EnsureNonNegative();
     return(BoxingHelper <Thickness> .Unbox(obj.GetValue(ArrowMarginProperty)));
 }
 public static double GetArrowSize([NotNull] System.Windows.Controls.MenuItem obj)
 {
     ValidationHelper.NotNull(obj, () => obj);
     DoubleUtil.EnsureNonNegative();
     return(BoxingHelper <double> .Unbox(obj.GetValue(ArrowSizeProperty)));
 }