Prado\Web\UI\ActiveControls\TActiveImage::setDescriptionUrl PHP Метод

    public function setDescriptionUrl($value)
    {
        if (parent::getDescriptionUrl() === $value) {
            return;
        }
        parent::setDescriptionUrl($value);
        if ($this->getActiveControl()->canUpdateClientSide()) {
            $this->getPage()->getCallbackClient()->setAttribute($this, 'longdesc', $value);
        }
    }