# System.Drawing.Imaging

``` diff
 namespace System.Drawing.Imaging {
+    public sealed class CachedBitmap : IDisposable {
+        public CachedBitmap(Bitmap bitmap, Graphics graphics);
+        public void Dispose();
+        ~CachedBitmap();
+    }
-    [EditorAttribute("System.Drawing.Design.MetafileEditor, System.Drawing.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.Drawing.Design.UITypeEditor, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
-    public sealed class Metafile : Image
+    [EditorAttribute("System.Drawing.Design.MetafileEditor, System.Drawing.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.Drawing.Design.UITypeEditor, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
+    [TypeForwardedFromAttribute("System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
+    public sealed class Metafile : Image
 }
```

