internal static DependencyObject GetParentInternal(DependencyObject reference)
{
Visual visual;
Visual3D visual3D;
VisualTreeUtils.AsVisualInternal(reference, out visual, out visual3D);
if (visual != null)
{
return(visual.InternalVisualParent);
}
if (visual3D != null)
{
return(visual3D.InternalVisualParent);
}
Debug.Assert(reference == null);
return(null);
}