share-extension-12.swift

//...
deck.tapHandler = {
    let vc = ShareSelectViewController()
    vc.userDecks = self.userDecks
    vc.delegate = self
    self.pushConfigurationViewController(vc)
}
//...

extension ShareViewController: ShareSelectViewControllerDelegate {
  func selected(deck: Deck) {
    selectedDeck = deck
    reloadConfigurationItems()
    popConfigurationViewController()
  }
}