gistfile1.cs

var links =
    LinkCheck
        .On(x => x.Url(new Uri(context.Url)))
        .AsBot(bot => bot.Google())
        .Start();
        .Where(x => (int) x.StatusCode >= 400)
        .Select(x => new ValidationIssue
            {
                Severity = SeverityEnum.Error,
                Title = "The following link returned status code " +
                        (int) x.StatusCode + ": " + x.Url.ToString() +
                        "."
            })
        .ToList()
        .ForEach(x => validationResult.Issues.Add(x));