public static void GetTaxWithholdingAgreements()
        {
            var binding = new BasicHttpBinding();
            //binding.OpenTimeout=new TimeSpan(0,0,5,0);
            binding.SendTimeout=new TimeSpan(0,0,5,0);
            binding.MaxReceivedMessageSize = Int32.MaxValue;
            var target = new bfsapi.bfsapiSoapClient(binding, new EndpointAddress("http://localhost:20010/bfsapi.asmx"));
           
            var req = new GetTaxWithholdingAgreementRequest();
            req.Credentials = new bfsapi.Credentials
            {
                UserName = "user",
                Password = "password"
            };

            req.identify = "identify";
            
            req.Fields = new bfsapi.GetTaxWithholdingAgreementFields()
            {
                TaxCountry = true,
                Person = true,
                ExpirationDate = true
            };


            req.Args = new bfsapi.GetTaxWithholdingAgreementArgs()
            {
                TaxCounties = new []{"US"}

            };

            var resp = target.GetTaxWithholdingAgreements(req);
            var s = "";
        }