public Set<Model> getClassModels(String jarName) {
   Set<Model> rootModels = jarPackageMap.get(jarName);
   Set<Model> classModels = new HashSet<Model>();
   if (CollectionUtils.hasElements(rootModels)) {
     for (Model model : rootModels) {
       model.listPackages(model, classModels, false);
     }
   }
   return classModels;
 }