Creating SignedURL for uploading multiple files

Question

For now I'm able to create signed url for uploading file to gcp storage. Is it possible to create one signed url for many files? Below is Golang implementation for single file:

opts := &storage.SignedURLOptions{
    GoogleAccessID: googleCfg.Email,
    PrivateKey:     googleCfg.PrivateKey,
    Scheme:         storage.SigningSchemeV4,
    Method:         http.MethodPut,
    Expires:        time.Now().Add(168 * time.Hour),
    ContentType:    contentType,
}

url, err := storage.SignedURL(bucketName, folderName+filePath, opts)
if err != nil {
    return "", err
}