Bitrix24\Im\Attach\Attach::getAttachList PHP Method

    private function getAttachList()
    {
        $arResult = array();
        /**
         * @var $obAttachItem iAttachItem
         */
        foreach ($this->getAttachItems() as $cnt => $obAttachItem) {
            $arResult[][$obAttachItem->getAttachTypeCode()] = $obAttachItem->getAttachData();
        }
        return $arResult;
    }