*/
private AdvancedModelWrapper performMerge(AdvancedModelWrapper source, AdvancedModelWrapper target) {
if (source == null || target == null) {
return null;
}
ModelDescription sourceDesc = source.getModelDescription();
ModelDescription targetDesc = target.getModelDescription();
Object transformResult = transformationEngine.performTransformation(sourceDesc, targetDesc,
source.getUnderlyingModel(), target.getUnderlyingModel());
AdvancedModelWrapper wrapper = AdvancedModelWrapper.wrap(transformResult);
wrapper.removeOpenEngSBModelEntry(EDBConstants.MODEL_VERSION);
return wrapper;