GDrive API v3 files.get下载进度如何？

import com.google.api.client.googleapis.media.MediaHttpDownloader;
import com.google.api.client.googleapis.media.MediaHttpDownloaderProgressListener;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.Drive.Files.Get;
import com.google.api.services.drive.model.File;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

public class GDriveDownloader {
    public static void main(String[] args) throws IOException {
        String fileId = "your-file-id";  // 替换为要下载的文件ID
        String accessToken = "your-access-token";  // 替换为你的访问令牌
        
        // 创建GDrive API实例
        Drive driveService = DriveUtils.getDriveService(accessToken);
        
        // 创建文件下载请求
        Get request = driveService.files().get(fileId);
        
        // 设置进度监听器
        MediaHttpDownloader downloader = request.getMediaHttpDownloader();
        downloader.setProgressListener(new CustomProgressListener());
        
        // 下载文件
        File file = request.execute();
        OutputStream outputStream = new FileOutputStream(file.getName());
        request.executeMediaAndDownloadTo(outputStream);
        
        System.out.println("文件下载完成！");
    }
    
    private static class CustomProgressListener implements MediaHttpDownloaderProgressListener {
        @Override
        public void progressChanged(MediaHttpDownloader downloader) throws IOException {
            switch (downloader.getDownloadState()) {
                case MEDIA_IN_PROGRESS:
                    System.out.println("下载进度：" + downloader.getProgress());
                    break;
                case MEDIA_COMPLETE:
                    System.out.println("下载完成！");
                    break;
            }
        }
    }
}