/** Update the settings for the global window cache of the workspace. */
 public static void reconfigureWindowCache() {
   final WindowCacheConfig c = new WindowCacheConfig();
   IEclipsePreferences d = DefaultScope.INSTANCE.getNode(Activator.getPluginId());
   IEclipsePreferences p = InstanceScope.INSTANCE.getNode(Activator.getPluginId());
   c.setPackedGitLimit(
       p.getInt(
           GitCorePreferences.core_packedGitLimit,
           d.getInt(GitCorePreferences.core_packedGitLimit, 0)));
   c.setPackedGitWindowSize(
       p.getInt(
           GitCorePreferences.core_packedGitWindowSize,
           d.getInt(GitCorePreferences.core_packedGitWindowSize, 0)));
   c.setPackedGitMMAP(
       p.getBoolean(
           GitCorePreferences.core_packedGitMMAP,
           d.getBoolean(GitCorePreferences.core_packedGitMMAP, false)));
   c.setDeltaBaseCacheLimit(
       p.getInt(
           GitCorePreferences.core_deltaBaseCacheLimit,
           d.getInt(GitCorePreferences.core_deltaBaseCacheLimit, 0)));
   c.setStreamFileThreshold(
       p.getInt(
           GitCorePreferences.core_streamFileThreshold,
           d.getInt(GitCorePreferences.core_streamFileThreshold, 0)));
   c.install();
 }
 @Override
 public void start() {
   final WindowCacheConfig c = new WindowCacheConfig();
   c.fromConfig(cfg);
   WindowCache.reconfigure(c);
 }