Uncoupled ViewControllers using Storyboard and UIStoryboardSegue

FoodDetailViewControllable.swift

protocol FoodDetailViewControllable {
    func bind(viewModel: FoodViewModel)
}

class FoodDetailViewController: UIViewController, FoodDetailViewControllable {

    func bind(viewModel: FoodViewModel) {
        title = viewModel.name
    }

}

ListFoodTableViewController.swift

class ListFoodTableViewController: UITableViewController {

    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        segue.prepareFoodDetail(tableView.indexPathForSelectedRow) { selectedItem in
            let group = groupedFoodViewModels[selectedItem.section]
            return group.foods[selectedItem.row]
        }
    }

}

PrepareSegueFoodDetail.swift

import UIKit

extension UIStoryboardSegue {
    func prepareFoodDetail(_ indexPath: IndexPath?, fn: (IndexPath) -> FoodViewModel?) {
        guard identifier == "OpenFoodDetail",
            let viewController = destination as? FoodDetailViewControllable,
            let indexPath = indexPath,
            let viewModel = fn(indexPath) else { return }
        viewController.bind(viewModel: viewModel)
    }
}