使用Objective-C复制或移动文件的最佳方法是什么？

// 导入腾讯云COS SDK
#import <QCloudCore/QCloudCore.h>
#import <QCloudCOSXML/QCloudCOSXML.h>

// 初始化腾讯云COS客户端
QCloudServiceConfiguration *configuration = [QCloudServiceConfiguration new];
configuration.appID = @"<your-app-id>";
configuration.region = @"<your-region>";
[QCloudCOSXMLService setupDefaultServiceConfiguration:configuration];

// 创建复制文件请求
QCloudCopyObjectRequest *request = [QCloudCopyObjectRequest new];
request.bucket = @"<your-source-bucket>";
request.object = @"<your-source-object>";
request.copySource = [NSString stringWithFormat:@"%@/%@", @"<your-source-bucket>", @"<your-source-object>"];
request.destinationBucket = @"<your-destination-bucket>";
request.destinationObject = @"<your-destination-object>";

// 发送复制文件请求
[[QCloudCOSXMLService defaultCOSXML] copyObject:request completionHandler:^(QCloudCopyObjectResult * _Nullable result, NSError * _Nullable error) {
    if (error) {
        NSLog(@"Error: %@", error);
    } else {
        NSLog(@"Result: %@", result);
    }
}];