覆盖UITableViewController子类中的cellForRowAtIndexPath返回错误：不会覆盖超类中的任何方法

Here is the code for my class

这是我班级的代码

import UIKit

class VideoSearchController: UITableViewController, UISearchResultsUpdating {

    var searchResults: NSDictionary = [:]

    let searchController = UISearchController(searchResultsController: nil)

    // Can't override
    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath as IndexPath) as! SearchTableCell

        cell.videoTitle.text = "This is the title"
        cell.viewCount.text = "1,234,567"
        cell.channelName.text = "benlvn"
        let url = URL(string: "https://i.redd.it/78r3ttko3nnz.jpg")
        let data = try? Data(contentsOf: url!) //make sure your image in this url does exist, otherwise unwrap in a if let check / try-catch
        cell.thumbnail.image = UIImage(data: data!)

        return cell
    }

    // Can't override
    override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
        return 1
    }

    // Override works
    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return searchResults.count
    }

    override func viewDidLoad() {
        super.viewDidLoad()

    }

    func updateSearchResults(for searchController: UISearchController) {
        // TODO
    }

    func searchBarIsEmpty() -> Bool {
        // Returns true if the text is empty or nil
        return searchController.searchBar.text?.isEmpty ?? true
    }

}
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