如何基于UICollectionView的部分以编程方式更新标签

import UIKit

class ViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
    var collectionView: UICollectionView!
    var labels: [String] = ["标签1", "标签2", "标签3", "标签4", "标签5"]
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 创建UICollectionViewFlowLayout实例
        let layout = UICollectionViewFlowLayout()
        layout.scrollDirection = .vertical
        layout.minimumInteritemSpacing = 10
        layout.minimumLineSpacing = 10
        
        // 创建UICollectionView实例
        collectionView = UICollectionView(frame: view.bounds, collectionViewLayout: layout)
        collectionView.dataSource = self
        collectionView.delegate = self
        collectionView.register(UICollectionViewCell.self, forCellWithReuseIdentifier: "Cell")
        view.addSubview(collectionView)
    }
    
    // MARK: - UICollectionViewDataSource
    
    func numberOfSections(in collectionView: UICollectionView) -> Int {
        return 1
    }
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return labels.count
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell", for: indexPath)
        cell.backgroundColor = .lightGray
        
        // 更新标签内容
        let label = UILabel(frame: cell.bounds)
        label.text = labels[indexPath.item]
        label.textAlignment = .center
        cell.contentView.addSubview(label)
        
        return cell
    }
    
    // MARK: - UICollectionViewDelegateFlowLayout
    
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        return CGSize(width: 100, height: 50)
    }
    
    // MARK: - Action
    
    @IBAction func updateLabels() {
        // 更新标签数据
        labels = ["标签A", "标签B", "标签C", "标签D", "标签E"]
        
        // 刷新集合视图
        collectionView.reloadData()
    }
}