Prado\Web\UI\WebControls\TCaptcha::setMinTokenLength PHP Method

    public function setMinTokenLength($value)
    {
        $length = TPropertyValue::ensureInteger($value);
        if ($length >= self::MIN_TOKEN_LENGTH && $length <= self::MAX_TOKEN_LENGTH) {
            $this->setViewState('MinTokenLength', $length, 4);
        } else {
            throw new TConfigurationException('captcha_mintokenlength_invalid', self::MIN_TOKEN_LENGTH, self::MAX_TOKEN_LENGTH);
        }
    }