protected function filterAndroid(array &$userAgent) {
        if ('safari' === $userAgent['browser_name'] && strpos($userAgent['string'], 'android ')) {
            $userAgent['browser_name'] = 'android';
            $userAgent['operating_system'] = 'android';
            $userAgent['browser_version'] = preg_replace('|.+android ([0-9]+(?:\.[0-9]+)+).+|', '$1', $userAgent['string']);
        }
    }