public function flushTemplatesOnViewHelperChanges(array $changedFiles)
    {
        if (!$this->templateCache instanceof FrontendInterface) {
            return;
        }

        foreach ($changedFiles as $pathAndFilename => $status) {
            if (strrpos($pathAndFilename, 'ViewHelper.php') !== false) {
                $this->templateCache->flush();
                return;
            }
        }
    }