public function __construct()
{
$this->setOption(self::OPTION_LENGTH, array('type' => Option::TYPE_INTEGER, 'default' => null))->setOption(self::OPTION_WORDS, array('type' => Option::TYPE_INTEGER, 'default' => 4))->setOption(self::OPTION_MIN_WORD_LENGTH, array('type' => Option::TYPE_INTEGER, 'default' => 3))->setOption(self::OPTION_MAX_WORD_LENGTH, array('type' => Option::TYPE_INTEGER, 'default' => 20))->setParameter(self::PARAMETER_WORD_SEPARATOR, '');
}