private void Upload()
    {
        var content = File.ReadAllBytes(UploadFilePath);

        if (content == null)
        {
            return;
        }

        var file = new UnityGoogleDrive.Data.File()
        {
            Name = Path.GetFileName(UploadFilePath), Content = content
        };

        request = GoogleDriveFiles.CreateResumable(file, resumableSessionUri);
        request.Send().OnDone += SaveSessionUri;
    }