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extension UIViewController {
  func setupHideKeyboard() -> UITapGestureRecognizer {
      let tap: UITapGestureRecognizer = UITapGestureRecognizer(
          target: self,
          action: #selector(UIViewController.dismissKeyboard))

      view.addGestureRecognizer(tap)
      return tap
  }

  func dismissKeyboard() {
      view.endEditing(true)
  }
}