public async Task <byte[]> Convert(IEnumerable <MultipartFormParameter> parameters, CancelToken cancelToken)
{
var token = cancelToken?.ToCancellationToken() ?? new CancellationToken();
using (var req = await WebUtility.PostRequest(BuildConvertUrl(), parameters, token))
{
using (var ms = new MemoryStream())
{
await req.Content.CopyToAsync(ms);
return(ms.ToArray());
}
}
}