override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "showDetailedImage" {
guard let indexPath = tableView.indexPathForSelectedRow,
let destinationVC = segue.destination as? DetailsVC else {return}
let imageToBePassed = UIImage(named: testImages[indexPath.row])
let nameToBePassed = String(describing: "\(testNames[indexPath.row])")
destinationVC.passedImage = imageToBePassed
destinationVC.passedImageName = nameToBePassed
}
}