MainFlow.swift

private func navigationToDashboardScreen () -> [NextFlowItem] {
    let tabbarController = UITabBarController()
    let wishlistStepper = WishlistStepper()
    let wishListFlow = WishlistWarp(withService: self.service,
                                    andStepper: wishlistStepper)
    let watchedFlow = WatchedFlow(withService: self.service)

    Flows.whenReady(flow1: wishListFlow, flow2: watchedFlow, block: { [unowned self]
    (root1: UINavigationController, root2: UINavigationController) in
        let tabBarItem1 = UITabBarItem(title: "Wishlist",
                                       image: UIImage(named: "wishlist"),
                                       selectedImage: nil)
        let tabBarItem2 = UITabBarItem(title: "Watched",
                                       image: UIImage(named: "watched"),
                                       selectedImage: nil)
        root1.tabBarItem = tabBarItem1
        root1.title = "Wishlist"
        root2.tabBarItem = tabBarItem2
        root2.title = "Watched"

        tabbarController.setViewControllers([root1, root2], animated: false)
        self.rootViewController.pushViewController(tabbarController, animated: true)
    })

    return ([NextFlowItem(nextPresentable: wishListFlow,
                      nextStepper: wishlistStepper),
             NextFlowItem(nextPresentable: watchedFlow,
                      nextStepper: OneStepper(withSingleStep: DemoStep.movieList))])
}