code: private OntopConnection getOntopConnection() throws RepositoryException {
  		if(!initialized)
  			throw new RepositoryException("The OntopVirtualRepository must be initialized before getConnection can be run.");
  		try {
  			return queryEngine.getConnection();
  		} catch (Exception e) {
  			throw new RepositoryException(e);
  		}
  
  	}
docs: Returns a connection which can be used to run queries over the repository
  Before this method can be used, initialize() must be called once.