code: private function getEventMap()
      {
          return [
              WatcherInterface::CREATE_EVENT => FilesystemEvent::CREATE,
              WatcherInterface::MODIFY_EVENT => FilesystemEvent::MODIFY,
              WatcherInterface::DELETE_EVENT => FilesystemEvent::DELETE,
              WatcherInterface::ALL_EVENT => FilesystemEvent::ALL
          ];
      }
docs: Maps watcher events to FilesystemEvents
  
  @return array