Pimcore\Model\Object\AbstractObject::getChildren PHP Method

    public function getChildren($objectTypes = [self::OBJECT_TYPE_OBJECT, self::OBJECT_TYPE_FOLDER], $unpublished = false)
    {
        if ($this->o_childs === null || $this->lastGetChildsObjectTypes != $objectTypes) {
            $this->lastGetChildsObjectTypes = $objectTypes;
            $list = new Listing();
            $list->setUnpublished($unpublished);
            $list->setCondition("o_parentId = ?", $this->getId());
            $list->setOrderKey("o_key");
            $list->setOrder("asc");
            $list->setObjectTypes($objectTypes);
            $this->o_childs = $list->load();
        }
        return $this->o_childs;
    }