splitVC presents StoreProductVC

extension UISplitViewController: SKStoreProductViewControllerDelegate {
    func openStoreProductWithiTunesItemIdentifier(identifier: String) {
        let storeViewController = SKStoreProductViewController()
        storeViewController.delegate = self
        let parameters = [ SKStoreProductParameterITunesItemIdentifier : identifier]
        storeViewController.modalTransitionStyle = .crossDissolve

        if isReachableCurrently() == true {
            present(storeViewController, animated: true, completion: nil)
            storeViewController.loadProduct(withParameters: parameters) { [weak self] (loaded, error) -> Void in
                if loaded {
                    // Parent class of self is UIViewContorller
                    // self?.present(storeViewController, animated: false, completion: nil)
                }
                if (error != nil) {
                    self?.productViewControllerDidFinish(storeViewController)
                    let url  = NSURL(string: "itms-apps://itunes.apple.com/app/bars/id1326479187")
                    if UIApplication.shared.canOpenURL(url! as URL) {
                        UIApplication.shared.open(url! as URL, options: [:],
                                                  completionHandler: {
                                                    (success) in
                                                    print("Open: \(success)")
                        })
                    }
                }
            }
        } else {
            BMAlert.showNetwordIssuesAlert(on: self)
        }

    }

    public func productViewControllerDidFinish(_ viewController: SKStoreProductViewController) {
        viewController.modalTransitionStyle = .crossDissolve
        viewController.dismiss(animated: true, completion: nil)
    }
}