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

    
    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 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
        }
        
        menuView.transform = CGAffineTransformIdentity
