true, message attachments from the incoming exchange and the enricher exchange will be copied to the outgoing message exchange. The default value is false (do not copy message atachments). ]]> true, message properties from the incoming exchange and the enricher exchange will be copied to the outgoing message exchange. The default value is false (do not copy message properties). ]]> sequenceNumberKey property. ]]> Aggregator pattern. This aggregator collect messages with a count, index and correlationId properties. These properties are automatically set by splitters. A timeout may be specified so that the aggregator will not keep data forever if a message is missing. ]]> the property is interpreted as a boolean value If fromExchange is true --> 3. If propertyResource is specified --> 2. else --> 1. ]]>