code: public QuestOWLEmptyEntitiesChecker getEmptyEntitiesChecker() throws Exception {
          OWLOntology rootOntology = getRootOntology();
          Ontology mergeOntology = owlapiTranslator.translateAndClassify(rootOntology);
          ClassifiedTBox tBox = mergeOntology.tbox();
  
          return new QuestOWLEmptyEntitiesChecker(tBox, owlConnection);
      }
docs: Methods to get the empty concepts and roles in the ontology using the given mappings.
  It generates SPARQL queries to check for entities.
  @return QuestOWLEmptyEntitiesChecker class to get empty concepts and roles
  @throws Exception