81     private UpgradeService $upgrade_service;  variable in Fisharebest\\Webtrees\\Http\\RequestHandlers\\UpgradeWizardStep
88      * @param UpgradeService      $upgrade_service
93         UpgradeService $upgrade_service  argument
97         $this->upgrade_service       = $upgrade_service;
150         $latest_version = $this->upgrade_service->latestVersion();
228         $download_url    = $this->upgrade_service->downloadUrl();
231 …$bytes = $this->upgrade_service->downloadFile($download_url, $root_filesystem, self::ZIP_FILENAME);
256         $this->upgrade_service->extractWebtreesZip($zip_file, $zip_folder);
257         $count    = $this->upgrade_service->webtreesZipContents($zip_file)->count();
279         $this->upgrade_service->startMaintenanceMode();
280         $this->upgrade_service->moveFiles($source_filesystem, $root_filesystem);
281         $this->upgrade_service->endMaintenanceMode();
284         $files_to_keep    = $this->upgrade_service->webtreesZipContents($zip_file);
287         $this->upgrade_service->cleanFiles($root_filesystem, $folders_to_clean, $files_to_keep);