如何从不同的数组中加载两个值作为searchController的结果？

import UIKit

class ViewController: UIViewController, UISearchResultsUpdating {
    var arrayA = ["Apple", "Banana", "Cherry", "Durian"]
    var arrayB = ["Elephant", "Frog", "Giraffe", "Horse"]
    var searchController: UISearchController!

    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 初始化searchController
        searchController = UISearchController(searchResultsController: nil)
        searchController.searchResultsUpdater = self
        searchController.searchBar.placeholder = "Search"
        navigationItem.searchController = searchController
        definesPresentationContext = true
    }
    
    // 搜索框文本变化时调用
    func updateSearchResults(for searchController: UISearchController) {
        let searchText = searchController.searchBar.text ?? ""
        
        // 从数组A中筛选符合条件的结果
        let filteredArrayA = arrayA.filter { $0.lowercased().contains(searchText.lowercased()) }
        
        // 从数组B中筛选符合条件的结果
        let filteredArrayB = arrayB.filter { $0.lowercased().contains(searchText.lowercased()) }
        
        // 将筛选出的结果作为searchController的结果
        searchController.searchResultsController?.view.isHidden = false
        // 更新搜索结果列表
        // ...
    }
}