private static void ThirdPartyInitiatedLoginCallback(IHttpContext context)
{
result = context.Request.Uri.Query;
OIDCAuthorizationRequestMessage requestMessage = new OIDCAuthorizationRequestMessage();
requestMessage.DeserializeFromQueryString(request);
OpenIdRelyingParty rp = new OpenIdRelyingParty();
rp.ThirdPartyInitiatedLogin(requestMessage, param);
}