protected virtual IEnumerable <string> FindLinks(IHtmlDocument document)
{
document.ResolveUriToAbsoluate();
foreach (var href in document.Find("a[href]").Select(element => element.Attribute("href").Value()))
{
var uri = new UriBuilder(new Uri(document.DocumentUri, href));
uri.Fragment = null;
yield return(uri.Uri.AbsoluteUri);
}
}