protected function _appendModuleLangFiles($aLangFiles, $aModulePaths, $sLang, $blForAdmin = false)
    {
        if (is_array($aModulePaths)) {
            foreach ($aModulePaths as $sPath) {
                $moduleTranslationPathFinder = $this->getModuleTranslationPathFinder();
                $sFullPath = $moduleTranslationPathFinder->findTranslationPath($sLang, $blForAdmin, $sPath);

                $aLangFiles = $this->_appendLangFile($aLangFiles, $sFullPath);
                //load admin modules options lang files
                if ($blForAdmin) {
                    $aLangFiles[] = $sFullPath . '/module_options.php';
                }
            }
        }

        return $aLangFiles;
    }