     
     open func addLeftGestures() {
     
-        if (leftViewController != nil) {
-            if (SlideMenuOptions.panGesturesEnabled) {
+        if leftViewController != nil {
+            if SlideMenuOptions.panGesturesEnabled {
                 if leftPanGesture == nil {
                     leftPanGesture = UIPanGestureRecognizer(target: self, action: #selector(self.handleLeftPanGesture(_:)))
                     leftPanGesture!.delegate = self

        if velocity.x <= thresholdVelocity {
            panInfo.action = .open
            panInfo.velocity = velocity.x
        } else if (velocity.x >= (-1.0 * thresholdVelocity)) {
            panInfo.action = .close
            panInfo.velocity = velocity.x
        }

                }
            }
            
            if SlideMenuOptions.tapGesturesEnabled {
                if rightTapGesture == nil {
                    rightTapGesture = UITapGestureRecognizer(target: self, action: #selector(self.toggleRight))
                    rightTapGesture!.delegate = self
