code: public Set<String> getDatabaseIds(OWLClass entity) {
      Set<String> dbAnnotations = new HashSet<>();
      for (OWLAnnotation annotation : entity.getAnnotations(ontology)) {
        if (annotation.getValue() instanceof OWLLiteral) {
          OWLLiteral val = (OWLLiteral) annotation.getValue();
          String value = val.getLiteral();
          if (value.matches(DB_ID_PATTERN)) {
            dbAnnotations.add(value);
          }
        }
      }
      return dbAnnotations;
    }
docs: TODO : FIXME replace the getAllDatabaseIds later on