 
 import UIKit
 
-internal let kSearchResultsCellReuseID = "searchResultsCellReuseID"
+private let kSearchResultsCellReuseID = "searchResultsCellReuseID"
 
 class BookSearchViewController: UIViewController {
     

    override func viewDidLoad() {
        super.viewDidLoad()
        
        roundCornersOfViews([titleDisplayLabel, authorDisplayLabel, descriptionDisplayLabel], byAmount: displayLabelCornerRadius)
    }
}


    @IBOutlet weak var searchBar: UISearchBar!
    @IBOutlet weak var resultsTableView: UITableView!
    
    private let apiClient = GoogleBooksAPIClient.sharedAPIClient
    private let maxResults = 20
    private let displayLabelCornerRadius: CGFloat = 5
    private let timeoutInterval = 5.0
    private var searchResults = [Book]() {
        didSet {
            if searchResults.isEmpty {
                resultsTableView.hidden = true
