if (target.getMailingLists().isEmpty()) {
            target.setMailingLists(new ArrayList<>(source.getMailingLists()));
        }
    }

    @Override
    protected void mergeModelBase_Modules(
            ModelBase target, ModelBase source, boolean sourceDominant, Map<Object, Object> context) {
        List<String> src = source.getModules();
        if (!src.isEmpty() && sourceDominant) {