Issue #3295626 by longwave, catch: Remove BC layer in...

   * @param \Symfony\Contracts\EventDispatcher\EventDispatcherInterface $event_dispatcher

   *   The event dispatcher service.

   */

  public function __construct(array $configuration, $plugin_id, $plugin_definition, $serializer_formats, LoggerInterface $logger, FileSystemInterface $file_system, EntityTypeManagerInterface $entity_type_manager, EntityFieldManagerInterface $entity_field_manager, AccountInterface $current_user, $mime_type_guesser, Token $token, LockBackendInterface $lock, Config $system_file_config, EventDispatcherInterface $event_dispatcher = NULL) {

  public function __construct(array $configuration, $plugin_id, $plugin_definition, $serializer_formats, LoggerInterface $logger, FileSystemInterface $file_system, EntityTypeManagerInterface $entity_type_manager, EntityFieldManagerInterface $entity_field_manager, AccountInterface $current_user, $mime_type_guesser, Token $token, LockBackendInterface $lock, Config $system_file_config, EventDispatcherInterface $event_dispatcher) {

    parent::__construct($configuration, $plugin_id, $plugin_definition, $serializer_formats, $logger);

    $this->fileSystem = $file_system;

    $this->entityTypeManager = $entity_type_manager;

    $this->token = $token;

    $this->lock = $lock;

    $this->systemFileConfig = $system_file_config;

    if (!$event_dispatcher) {

      @trigger_error('The event dispatcher service should be passed to FileUploadResource::__construct() since 9.2.0. This will be required in Drupal 10.0.0. See https://www.drupal.org/node/3032541', E_USER_DEPRECATED);

      $event_dispatcher = \Drupal::service('event_dispatcher');

    }

    $this->eventDispatcher = $event_dispatcher;

  }