private static Request BuildUpdateRequest(UpdateChallengeOptions options, ITwilioRestClient client)
 {
     return(new Request(
                HttpMethod.Post,
                Rest.Domain.Verify,
                "/v2/Services/" + options.PathServiceSid + "/Entities/" + options.PathIdentity + "/Factors/" + options.PathFactorSid + "/Challenges/" + options.PathSid + "",
                postParams: options.GetParams()
                ));
 }