public CustomerProfileResponse CustomerProfile(CustomerProfileRequest request)
        {
            if (request == null)
                throw new ArgumentNullException("request");

            return SendGetRequest<CustomerProfileRequest, CustomerProfileResponse>(request, "CustomerProfile");
        }
        public CustomerProfileResponse CustomerProfile(string merchantCustomerID, string merchantSessionID)
        {
            if (merchantCustomerID == null)
                throw new ArgumentNullException("merchantCustomerID");

            var request = new CustomerProfileRequest
            {
                MerchantCustomerID = merchantCustomerID,
                MerchantSessionID = merchantSessionID
            };
            return CustomerProfile(request);
        }