Need a public interface to permit us to flush caches

Need a public interface somewhere to permit us to flush these caches.

digraph "rxlauncher.jar" {
    // Path: rxlauncher.jar
   "com.attachmate.rx.launcher.ClassLoaderCleanup" ->
"sun.awt.image.BufferedImageGraphicsConfig (JDK internal API (rt.jar))";
   "com.attachmate.rx.launcher.ClassLoaderCleanup" ->
"sun.swing.CachedPainter (JDK internal API (rt.jar))";
   "com.attachmate.rx.launcher.ClassLoaderCleanup" ->
"sun.swing.ImageCache (JDK internal API (rt.jar))";
}

These accesses are used to clear cached object references so that a custom
Classloader can be garbage collected. BufferedImageGraphicsConfig caches
color models. CachedPainter contains ImageCache objects which use
SoftReferences, where these soft references may refer to classes loaded by
our class loader.