protected function _getUlangInfo($key = null, $reverse = false) {
		$result = '';
		if (empty($key)) {
			return $result;
		}

		$UIlangs = $this->_modelConfigSettingsApp->getUiLangs();
		if (empty($UIlangs)) {
			return $result;
		}

		if ($reverse) {
			$UIlangs = array_flip($UIlangs);
		}
		if (isset($UIlangs[$key])) {
			$result = $UIlangs[$key];
		}

		return $result;
	}