code: boolean isEmpty(List<List<RepositoryResource>> installResources) {
          if (installResources == null)
              return true;
          for (List<RepositoryResource> mrList : installResources) {
              if (!mrList.isEmpty())
                  return false;
          }
          return true;
      }
docs: Checks if installResources contains any resources
  
  @param installResources the list of lists containing Install Resources
  @return true if all lists are empty