public void GetPaymentSummaryTest()
        {
            var os = new OpenStackMember(UserName, Password, TenantName); // with tenant
            var s  = os.GetPaymentSummary();

            Assert.IsNotNull(s);
            Trace.WriteLine(string.Format("TotalDepositAmount : {0}", s.TotalDepositAmount));
            Trace.WriteLine(string.Format("TotalLockedUnusedAmount : {0}", s.TotalLockedUnusedAmount));
            Trace.WriteLine(string.Format("TotalReceivedAmount : {0}", s.TotalReceivedAmount));
            Trace.WriteLine(string.Format("TotalUnusedAmount : {0}", s.TotalUnusedAmount));
        }