xml.BillingAddress {
            xml.FirstName(payment_source.first_name || parse_first_name(billing_address[:name]))
            xml.LastName(payment_source.last_name || parse_last_name(billing_address[:name]))
            xml.Address1(billing_address[:address1])
            xml.Address2(billing_address[:address2]) unless billing_address[:address2].blank?