private static void addCertificate(IoTDAClient client)
        {
            AddCertificateRequest req = new AddCertificateRequest
            {
                Body = new CreateCertificateDTO()
                {
                    Content = "-----BEGIN CERTIFICATE-----MIID2TCCAsGgAwIBAgIJAOEDEgVdVMn9MA0GCSqGSIb3DQEBCwUAMIGCMQswCQYDVQQGEwJDTjERMA8GA1UECAwIR3VhbmRvbmcxETAPBgNVBAcMCFNoZW56aGVuMQ8wDQYDVQQKDAZIdWF3ZWkxDDAKBgNVBAsMA2lvdDESMBAGA1UEAwwJMTIzNDU2Nzg5MRowGAYJKoZIhvcNAQkBFgtkamthQHFxLmNvbTAeFw0xOTEyMTkxMzE1MjZaFw0yMjEwMDgxMzE1MjZaMIGCMQswCQYDVQQGEwJDTjERMA8GA1UECAwIR3VhbmRvbmcxETAPBgNVBAcMCFNoZW56aGVuMQ8wDQYDVQQKDAZIdWF3ZWkxDDAKBgNVBAsMA2lvdDESMBAGA1UEAwwJMTIzNDU2Nzg5MRowGAYJKoZIhvcNAQkBFgtkamthQHFxLmNvbTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAM72QUzoadvLfxGjt3UFoZ4MJbblqnRbouO4KpOVHBXyS2yQVl4CWWMhLh4pp2efNUSqKuXHjY3r68PquyNnYk8zO59zVc7JHvjGkBvo7DgPRAhEKPLJIpRzkmlCBbxwTNCjc3FovGb/sHHNlpGncCKUzMfPGNZuBiuemskuEXL/eMHxDPbXYWn4Wq0wt+28PKUL5jybY7nsXSNnmAPFTO0CAmq0meUukubT/jHDCQ78ihQ/iqw1RNq88aCqRleoHiGg5nWkjL+05GXqUrqVVnZNL+YqcXzuVMs5XgyhNM2AsuH2g3D8ZuF6Dj9qY1n/v/Cp/DGpxP3A74SlplnFD/0CAwEAAaNQME4wHQYDVR0OBBYEFAVPWVtpTdO6KQnmVrrNlMguWNR7MB8GA1UdIwQYMBaAFAVPWVtpTdO6KQnmVrrNlMguWNR7MAwGA1UdEwQFMAMBAf8wDQYJKoZIhvcNAQELBQADggEBAE40ViqK+UaEn++Xq6f4Cmeg3JqYHu47v9RIAASNihYRBQ/r3RE7Af3GqjIO5nMJJuCMzdcoAU8N9KwkgXD+GLR9fYLEoEmq5CrhgaGDsCi85vCsmWhj5z8r5TG207xpmvH2KT447dnG+chMBE594ma85dCv+0mCDrqNToElipgT8+rYAYVClnIt3kbsTg1vSRNHadd+TpgRVxJZBF0fHcCAyc/2f3UJgPYNWShIetHM6BdI3fZ4H+eeHPjagm5kzmffli1cUv2/N+1hKUvcI4uFCqEwZRFtp90RyIbxUfQwi+CsXVnwV+BZS5qD9bTcfxZMXhuVRwO/5xWYMYPN1uY=-----END CERTIFICATE-----"
                },
            };

            try
            {
                var resp = client.AddCertificate(req);
                Console.WriteLine(resp.HttpStatusCode);
                Console.WriteLine(resp);
            }
            catch (RequestTimeoutException requestTimeoutException)
            {
                Console.WriteLine(requestTimeoutException.ErrorMessage);
            }
            catch (ServiceResponseException clientRequestException)
            {
                Console.WriteLine(clientRequestException.HttpStatusCode);
                Console.WriteLine(clientRequestException.ErrorCode);
                Console.WriteLine(clientRequestException.ErrorMsg);
            }
            catch (ConnectionException connectionException)
            {
                Console.WriteLine(connectionException.ErrorMessage);
            }
        }