/**
  * {@inheritdoc}
  */
 protected function checkParameters(ConnectionParametersInterface $parameters)
 {
     if ($parameters->iterable_multibulk === true) {
         $this->onInvalidOption('iterable_multibulk', $parameters);
     }
     if ($parameters->persistent === true) {
         $this->onInvalidOption('persistent', $parameters);
     }
     return parent::checkParameters($parameters);
 }