private void CurrentDomain_DomainUnload(object sender, EventArgs e)
 {
     log.Debug(AppDomain.CurrentDomain.FriendlyName + " unloaded");
     InternalTrace.Flush();
 }
 void OnDomainUnload(object sender, EventArgs e)
 {
     log.Info("Unloading domain " + AppDomain.CurrentDomain.FriendlyName);
     InternalTrace.Flush();
 }