HOW to import an image AS smartobjectLayer

[taiamakimo]

Hi, I try to import an image to PSD, it's successful, but
is a normal Layer, how to be a smartobjectLayer.
Thank you all for your guidance.
code following:
using (var image = (PsdImage)Aspose.PSD.Image.Load(@"C:\001.psd"))
{

            string filePath = @"C:\test.jpg";
            using (var stream = new FileStream(filePath, FileMode.Open))
            {
                Layer layer = null;
                try
                {
                    layer = new Layer(stream);
                    image.AddLayer(layer); 
                }
                catch (Exception e2)
                {
                    if (layer != null)
                    {
                        layer.Dispose();
                    }
                    throw e2;
                }
            }

            image.Save(@"C:\003.psd");
        }