private EventBus eventBus;
@Override
public boolean prepare(InteractionUnit<StereoTypes> interactionUnit, Context context) {
Map<QName, ModelNode> descriptions = context.get (ContextKey.MODEL_DESCRIPTIONS);
QName correlationId = interactionUnit.findMapping(MappingType.DMR, new Predicate<DMRMapping>() {
@Override
public boolean appliesTo(DMRMapping candidate) {
return candidate.getAddress()!=null;
}
}).getCorrelationId();