open func moveToViewController(at index: Int, animated: Bool = true) {
        guard isViewLoaded && view.window != nil && currentIndex != index else {
            currentIndex = index
            return
        }
        if animated && pagerBehaviour.skipIntermediateViewControllers && abs(currentIndex - index) > 1 {
            var tmpViewControllers = viewControllers
            let currentChildVC = viewControllers[currentIndex]
            let fromIndex = currentIndex < index ? index - 1 : index   1
            let fromChildVC = viewControllers[fromIndex]
            tmpViewControllers[currentIndex] = fromChildVC
            tmpViewControllers[fromIndex] = currentChildVC
            pagerTabStripChildViewControllersForScrolling = tmpViewControllers
            containerView.setContentOffset(CGPoint(x: pageOffsetForChild(at: fromIndex), y: 0), animated: false)
            (navigationController?.view ?? view).isUserInteractionEnabled = false
            containerView.setContentOffset(CGPoint(x: pageOffsetForChild(at: index), y: 0), animated: true)
        } else {
            (navigationController?.view ?? view).isUserInteractionEnabled = false
            containerView.setContentOffset(CGPoint(x: pageOffsetForChild(at: index), y: 0), animated: animated)
        }
    }