// This method is invoked when the application has loaded its UI and its ready to run
public override bool FinishedLaunching(UIApplication app, NSDictionary options)
{
RC.RegisterReference <IDocumentBookmarkManager, MyDocumentBookmarkManager>();
RC.RegisterReference <IDocumentNoteManager, MyDocumentNoteManager>();
RC.RegisterReference <IOptionsManager, OptionsManager>();
window.RootViewController = mainTabbarController;
window.MakeKeyAndVisible();
return(true);
}