public async Task<string?> TryGetUrlFileIconClassAsync(DocumentKey doc, CancellationToken cancellationToken)
{
    var ini = await TryReadUrlFileAsync(doc, cancellationToken);
    var iconFile = ini?.GetValue("InternetShortcut", "IconFile");

    return String.IsNullOrEmpty(iconFile) ? null : iconFile;
}

private async Task<string?> TryGetUrlFileTargetAsync(DocumentKey doc, CancellationToken cancellationToken)
{
    var ini = await TryReadUrlFileAsync(doc, cancellationToken);
    var target = ini?.GetValue("InternetShortcut", "URL");

    if (String.IsNullOrWhiteSpace(target))
        return null;

    if (!Uri.TryCreate(target, UriKind.Absolute, out var uri))
        return null;

    if (!(uri.Scheme == Uri.UriSchemeHttp || uri.Scheme == Uri.UriSchemeHttps))
        return null;

    return uri.ToString();
}

private async Task<IniDocument?> TryReadUrlFileAsync(DocumentKey doc, CancellationToken cancellationToken)
{
    try
    {
        using var response = await s3.GetObjectAsync(new GetObjectRequest
        {
            BucketName = _settings.S3.Bucket,
            Key = doc.ToString(),
        }, cancellationToken);

        using var reader = new StreamReader(response.ResponseStream);
        return await iniParser.ParseAsync(reader, cancellationToken);
    }
    catch (AmazonS3Exception exception) when (exception.StatusCode == HttpStatusCode.NotFound)
    {
        return null;
    }
}