cleanupTemplateRelations example

if ($this->request->isPost()) {
            $this->cleanupMedia();
        }

        if (\count($cleanupList) == 0) {
            $_SESSION['CLEANUP_DONE'] = true;
            $this->response->redirect($this->app->urlFor('done'));
        }

        if ($this->request->isPost()) {
            $this->cleanupTemplateRelations();

            $result = [];
            foreach ($cleanupList as $path) {
                $result = array_merge($result, Utils::cleanPath($path));
            }

            if (\count($result) == 0) {
                $_SESSION['CLEANUP_DONE'] = true;
                $this->response->redirect($this->app->urlFor('done'));
            } else {
                $result = array_map(