Faturayı GİB'den Kontrol Eder

var client = new RestClient("https://apitest.nilvera.com/einvoice/Purchase/10c46a24-08bc-4cc0-ae3e-fa908a2b77c1/CheckFromGib");
client.Timeout = -1;
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "Bearer <API KEY>");
IRestResponse response = client.Execute(request);
Console.WriteLine(response.Content);