The Petals CDK inclkudes an API to retrieve node 'consumes' according to endpoint name, interface name and service name:
org.ow2.petals.component.framework.su.AbstractServiceUnitManager.getConsumesFromDestination(endpointName, serviceName, interfaceName)
Please, add a similar API to return node 'consumes' matching also a given operation name:
org.ow2.petals.component.framework.su.AbstractServiceUnitManager.getConsumesFromDestination(endpointName, serviceName, interfaceName, operation)