rr-sync-processing.xml

 <flow name="request-reply-asyncFlow">
        <http:listener config-ref="HTTP_Listener_Configuration" path="/" doc:name="HTTP"/>
        <set-payload value="#[{'1','2','3','1','2','3','1','2','3'}]" doc:name="Set Payload"/>
        <logger message="#[payload]" level="INFO" doc:name="Logger"/>
        <collection-splitter doc:name="Collection Splitter"/>
        <request-reply doc:name="Request-Reply">
            <vm:outbound-endpoint exchange-pattern="one-way" path="vmRequest" doc:name="VM"/>
            <vm:inbound-endpoint exchange-pattern="one-way" path="vmReply" doc:name="VM"/>
        </request-reply>
        <collection-aggregator failOnTimeout="true" doc:name="Collection Aggregator"/>
        <logger message="=After Request/Reply=" level="INFO" doc:name="Logger"/>
        <json:object-to-json-transformer doc:name="Object to JSON"/>
    </flow>