如何在Swift中OpalImagePicker的didfinish方法中将PHAsset类型转换为URL？

import Photos

func imagePicker(_ picker: OpalImagePickerController, didFinishPickingAssets assets: [PHAsset]) {
    // 获取选中的PHAsset对象
    let selectedAsset = assets.first
    
    // 进行PHAsset类型转换为URL的操作
    // ...
}

func imagePicker(_ picker: OpalImagePickerController, didFinishPickingAssets assets: [PHAsset]) {
    let selectedAsset = assets.first
    
    // 获取图片的本地文件路径
    let options = PHImageRequestOptions()
    options.isSynchronous = true
    options.deliveryMode = .highQualityFormat
    
    PHImageManager.default().requestImageData(for: selectedAsset!, options: options) { (imageData, dataUTI, orientation, info) in
        if let imageURL = info?["PHImageFileURLKey"] as? URL {
            // 在这里可以使用获取到的imageURL
            // ...
        }
    }
}