public bool GetBitmapContent(out IBitmap bitmap) => BlamContentFactory.TryGetBitmapContent(item, out bitmap);
 public bool GetGeometryContent(out IRenderGeometry geometry) => BlamContentFactory.TryGetGeometryContent(item, out geometry);
 public bool GetSoundContent(out ISoundContainer container) => BlamContentFactory.TryGetSoundContent(item, out container);