Author: Arnaud Langlade (arn0d.dev@gmail.com)
Inheritance: implements Symfony\Component\EventDispatcher\EventSubscriberInterface
 /**
  * @param ServiceRegistryInterface $actionRegistry
  * @param FormFactoryInterface $factory
  * @param ChannelRepositoryInterface $channelRepository
  */
 public function __construct(ServiceRegistryInterface $actionRegistry, FormFactoryInterface $factory, ChannelRepositoryInterface $channelRepository)
 {
     parent::__construct($actionRegistry, $factory);
     $this->channelRepository = $channelRepository;
 }