code: @Override
      public MarkLogicTupleQuery prepareTupleQuery(String queryString) throws RepositoryException, MalformedQueryException {
          return prepareTupleQuery(QueryLanguage.SPARQL, queryString);
      }
docs: overload for prepareTupleQuery
  
  @param queryString
  @return MarkLogicTupleQuery
  @throws RepositoryException
  @throws MalformedQueryException