public function __construct()
{
parent::__construct();
$this->removeOption(self::OPTION_LENGTH)->setOption(self::OPTION_SEGMENT_COUNT, array('type' => Option::TYPE_INTEGER, 'default' => 4))->setOption(self::OPTION_SEGMENT_LENGTH, array('type' => Option::TYPE_INTEGER, 'default' => 3))->setParameter(self::PARAMETER_SEPARATOR, '-');
}