Controller.swift

class SearchController: UIViewController, UISearchBarDelegate {
  
    @IBOutlet weak var searchBar: UISearchBar!
    weak var delegate: SearchBarControllerDelegate?
    var expirationsArray: Array<String>? = []
    
  
    override func viewDidLoad() {
        super.viewDidLoad()
        searchBar.delegate = self
    }
    
  
    func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
        //expirationsArray = AppUtils.getExpirations(for: searchText) <---- this is what I want to do but I don't know how to return Array<String> object from "how_do_i_return_an_array.swift"
    }
}