Hackzilla\PasswordGenerator\Generator\DummyPasswordGenerator::setLength PHP Метод

    public function setLength($characterCount)
    {
        if (!is_int($characterCount) || $characterCount < 1) {
            throw new \InvalidArgumentException('Expected positive integer');
        }
        $this->setOptionValue(self::OPTION_LENGTH, $characterCount);
        return $this;
    }