public function filterByEn($en = null, $comparison = null)
    {
        if (null === $comparison) {
            if (is_array($en)) {
                $comparison = Criteria::IN;
            } elseif (preg_match('/[\%\*]/', $en)) {
                $en = str_replace('*', '%', $en);
                $comparison = Criteria::LIKE;
            }
        }

        return $this->addUsingAlias(CountryPeer::EN, $en, $comparison);
    }