Пример элемента последовательности
<sequence>
<!-- Web service Choreography Sequence -->
<operation name="placeBuyOrder">
<input message="buySellOrderRequest"/>
<output message="buySellOrderResponse"/>
</operation>
<operation name="confirmBuyOrder">
<input message="buySellOrderResponse"/>
<output message="buySellOrderResponse"/>
</operation>
<operation name="debitMoney">
<input message="creditCardDetails"/>
<output message="debitMoneyResponse"/>
</operation>
</sequence>
