public function updateTitle($title)
    {
        $app = Application::getFacadeApplication();
        $this->fvTitle = $title;
        $this->save();
        $this->logVersionUpdate(self::UT_TITLE);
        $fve = new FileVersionEvent($this);
        $app->make(EventDispatcherInterface::class)->dispatch('on_file_version_update_title', $fve);
    }