Prado\Web\UI\WebControls\TReCaptchaValidator::getCaptchaControl PHP Method

    protected function getCaptchaControl()
    {
        $control = $this->getValidationTarget();
        if (!$control) {
            throw new Exception('No target control specified for TReCaptchaValidator');
        }
        if (!$control instanceof TReCaptcha) {
            throw new Exception('TReCaptchaValidator only works with TReCaptcha controls');
        }
        return $control;
    }