private static Visual3D Duplicate(Visual3D child, Predicate <ModelVisual3D> selector)
{
var modelVisual3d = child as ModelVisual3D;
if (modelVisual3d != null)
{
return(Duplicate(modelVisual3d, selector));
}
else
{
throw new NotSupportedException("We do not support duplication of visuals of type " + child.GetType());
}
}