Inheritance: extends ContentBasedMatcherFactory
 /**
  * @param string $matcherIdentifier
  *
  * @return \eZ\Publish\Core\MVC\Symfony\Matcher\ContentBased\MatcherInterface
  */
 protected function getMatcher($matcherIdentifier)
 {
     if ($this->container->has($matcherIdentifier)) {
         return $this->container->get($matcherIdentifier);
     }
     return parent::getMatcher($matcherIdentifier);
 }