如何获取collectionView中的Moment相册和所有个人相册？

import UIKit
import Photos

class ViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource {
    @IBOutlet weak var collectionView: UICollectionView!
    
    var momentAlbums: [PHAssetCollection] = []
    var personalAlbums: [PHAssetCollection] = []
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        collectionView.delegate = self
        collectionView.dataSource = self
        
        // 请求用户授权
        PHPhotoLibrary.requestAuthorization { (status) in
            if status == .authorized {
                // 获取Moment相册
                let momentAlbumsResult = PHAssetCollection.fetchAssetCollections(with: .moment, subtype: .any, options: nil)
                momentAlbumsResult.enumerateObjects { (collection, _, _) in
                    self.momentAlbums.append(collection)
                }
                
                // 获取所有个人相册
                let personalAlbumsResult = PHAssetCollection.fetchAssetCollections(with: .smartAlbum, subtype: .albumRegular, options: nil)
                personalAlbumsResult.enumerateObjects { (collection, _, _) in
                    self.personalAlbums.append(collection)
                }
                
                DispatchQueue.main.async {
                    self.collectionView.reloadData()
                }
            }
        }
    }
    
    // MARK: - UICollectionViewDataSource
    
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return momentAlbums.count + personalAlbums.count
    }
    
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "AlbumCell", for: indexPath) as! AlbumCell
        
        if indexPath.row < momentAlbums.count {
            let momentAlbum = momentAlbums[indexPath.row]
            // 显示Moment相册封面和标题
            cell.titleLabel.text = momentAlbum.localizedTitle
            // 使用PHAsset获取封面图片
            let fetchOptions = PHFetchOptions()
            fetchOptions.fetchLimit = 1
            let assets = PHAsset.fetchAssets(in: momentAlbum, options: fetchOptions)
            if let asset = assets.firstObject {
                let manager = PHImageManager.default()
                let targetSize = CGSize(width: cell.imageView.bounds.width * UIScreen.main.scale, height: cell.imageView.bounds.height * UIScreen.main.scale)
                manager.requestImage(for: asset, targetSize: targetSize, contentMode: .aspectFill, options: nil) { (image, _) in
                    cell.imageView.image = image
                }
            }
        } else {
            let personalAlbum = personalAlbums[indexPath.row - momentAlbums.count]
            // 显示个人相册封面和标题
            cell.titleLabel.text = personalAlbum.localizedTitle
            // 使用PHAsset获取封面图片，同上
        }
        
        return cell
    }
}

class AlbumCell: UICollectionViewCell {
    @IBOutlet weak var imageView: UIImageView!
    @IBOutlet weak var titleLabel: UILabel!
}