     internal class func presentMenuStart(forSize size: CGSize = SideMenuManager.appScreenRect.size) {
         guard let menuView = SideMenuTransition.presentDirection == .Left ? SideMenuManager.menuLeftNavigationController?.view : SideMenuManager.menuRightNavigationController?.view,
             let mainViewController = SideMenuTransition.viewControllerForPresentedMenu else {
-            return
+                return
         }
         
         menuView.transform = CGAffineTransformIdentity

    
    internal class func hideMenuComplete() {
        guard let mainViewController = SideMenuTransition.viewControllerForPresentedMenu,
           let menuView = SideMenuTransition.presentDirection == .Left ? SideMenuManager.menuLeftNavigationController?.view : SideMenuManager.menuRightNavigationController?.view else {return}

        SideMenuTransition.tapView.removeFromSuperview()
        SideMenuTransition.statusBarView?.removeFromSuperview()

    
    internal class func presentMenuComplete() {
        NSNotificationCenter.defaultCenter().addObserver(SideMenuTransition.singleton, selector:#selector(SideMenuTransition.applicationDidEnterBackgroundNotification), name: UIApplicationDidEnterBackgroundNotification, object: nil)
        guard let mainViewController = SideMenuTransition.viewControllerForPresentedMenu else {
            return
        }
      
        switch SideMenuManager.menuPresentMode {
        case .MenuSlideIn, .MenuDissolveIn, .ViewSlideInOut:
