public static ApiClient GetNPrintingApiClient(string npUrl)
        {
            ServicePointManager.ServerCertificateValidationCallback += (sender, certificate, chain, sslPolicyErrors) => true;

            ApiClient apiClient = new ApiClient(npUrl);

            AuthenticationApi auth = new AuthenticationApi(apiClient);

            IList <RestResponseCookie> cookies = auth.GetNPrintingCookiesWithHttpInfo();
            var xsrfToken = cookies.SingleOrDefault(cookie => cookie.Name.Equals("NPWEBCONSOLE_XSRF-TOKEN"));

            if (xsrfToken != null)
            {
                apiClient.DefaultHeader.Add("X-XSRF-TOKEN", xsrfToken.Value);
            }

            apiClient.RestClient.Authenticator = new NtlmAuthenticator();
            auth.NtlmAuthentication();

            return(apiClient);
        }