Wiki - Security scenarios code example is incomplete

[epiphone]

https://github.com/DotNetOpenAuth/DotNetOpenAuth/wiki/Security-scenarios

It seems that the following listing is incomplete?

Listing 5

public class TokenValidator
public class TokenValidator
{
       public void ValidateToken(dynamic tokenInfo, string expectedAudience)
       {
           var audience = tokenInfo.audience.ToString();
           if (string.IsNullOrEmpty(audience) || audience != expectedAudience)
           {
                  var e = new HttpException("tokes with unexpected audience: ");
                  throw e;
           }

       if (tokenInfo.expires_in == null) return;
       var expiresIn = tokenInfo.expires_in.ToString();
       int intExpiresIn;
       var isInt = int.TryParse(expiresIn, out intExpiresIn);

       if (!isInt || intExpiresIn

I tried it with Chrome and Firefox.