private static CompanyContactsAPI CompanyContactsAPIClientWithAuth()
 {
     var client = new CompanyContactsAPI(new Uri(ConfigurationManager.AppSettings["CompanyContactsAPIUrl"]));
     client.HttpClient.DefaultRequestHeaders.Authorization =
         new AuthenticationHeaderValue("Bearer", ServicePrincipal.GetS2SAccessTokenForProdMSA().AccessToken);
     return client;
 }
        private static CompanyContactsAPI CompanyContactsAPIClientWithAuth()
        {
            var client = new CompanyContactsAPI(new Uri(ConfigurationManager.AppSettings["CompanyContactsAPIUrl"]));

            client.HttpClient.DefaultRequestHeaders.Authorization =
                new AuthenticationHeaderValue("Bearer", ServicePrincipal.GetS2SAccessTokenForProdMSA().AccessToken);
            return(client);
        }