Rasterizing Step Files

i am trying to get the edges of a step file to display in a different color. when choosing SolidWithEdges, the edges do not seem to be visible.

    using var memoryStream = new MemoryStream();
    var options = new PngOptions
    {
        ColorType = global::Aspose.CAD.FileFormats.Png.PngColorType.TruecolorWithAlpha,
        BitDepth = 8,
        VectorRasterizationOptions = new CadRasterizationOptions()
        {
            PageWidth = 1024,
            PageHeight = 768,
            ObserverPoint = new global::Aspose.CAD.FileFormats.ObserverPoint(35.264f, -45, 0),
            RenderMode3D = RenderMode3D.SolidWithEdges,
        },
        CancellationToken = cancellation
    };
    await sourceImage.SaveAsync(memoryStream, options);
    return memoryStream.ToArray();
}

@kevin.kilburn,
We have created CADNET-9906 to consider supporting this mode for STP.