static RollTransition()
 {
     AcceptsNullContentProperty.OverrideMetadata(typeof(RollTransition), new FrameworkPropertyMetadata(NullContentSupport.New));
     IsNewContentTopmostProperty.OverrideMetadata(typeof(RollTransition), new FrameworkPropertyMetadata(false));
     ClipToBoundsProperty.OverrideMetadata(typeof(RollTransition), new FrameworkPropertyMetadata(true));
 }
 static FadeTransition()
 {
     IsNewContentTopmostProperty.OverrideMetadata(typeof(FadeTransition), new FrameworkPropertyMetadata(false));
 }
 static FadeAndBlurTransition()
 {
     AcceptsNullContentProperty.OverrideMetadata(typeof(FadeAndBlurTransition), new FrameworkPropertyMetadata(NullContentSupport.New));
     IsNewContentTopmostProperty.OverrideMetadata(typeof(FadeAndBlurTransition), new FrameworkPropertyMetadata(false));
 }
 static GrowTransition()
 {
     AcceptsNullContentProperty.OverrideMetadata(typeof(GrowTransition), new FrameworkPropertyMetadata(NullContentSupport.Both));
     IsNewContentTopmostProperty.OverrideMetadata(typeof(GrowTransition), new FrameworkPropertyMetadata(false));
 }