         
         let cardMaskLayer = CAShapeLayer()
         cardMaskLayer.path = borderPath
-        cardMaskLayer.fillColor = UIColor.white().cgColor
-        cardMaskLayer.backgroundColor = UIColor.clear().cgColor
+        cardMaskLayer.fillColor = UIColor.white.cgColor
+        cardMaskLayer.backgroundColor = UIColor.clear.cgColor
         drawerContentContainer.layer.mask = cardMaskLayer
         drawerShadowView.layer.shadowPath = borderPath
         

            self.primaryContentContainer.addSubview(controller.view)
            self.addChildViewController(controller)
            
            if self.isViewLoaded()
            {
                self.view.setNeedsLayout()
            }

    /// The corner radius for the drawer.
    public var drawerCornerRadius: CGFloat = 13.0 {
        didSet {
            if self.isViewLoaded
            {
                self.view.setNeedsLayout()
            }
