         }
     }
 
+    /// The blur radius of the drawer's shadow.
     @IBInspectable public var shadowRadius: CGFloat = 3 {
         didSet {
             containerView.leftWrapperView.layer.shadowRadius = shadowRadius


    // MARK: - Accessing the Delegate

    public weak var delegate: KZSideDrawerControllerDelegate?

    // MARK: - Child View Controllers

    public var centerViewController: UIViewController? {
        didSet(oldCenterViewController) {
            guard oldCenterViewController != centerViewController else { return }

        }
    }

    /// The offset of the drawer's shadow.
    @IBInspectable public var shadowOffset: CGSize = CGSize.zero {
        didSet {
            containerView.leftWrapperView.layer.shadowOffset = shadowOffset
