/**
* @param \Magento\Catalog\Api\CategoryManagementInterface $categoryReadService
* @param \Magento\Eav\Model\Config $eavConfig
* @param \Magento\Catalog\Model\Resource\Product\Attribute\CollectionFactory $attributeCollectionFactory
* @param \Magento\Eav\Model\Resource\Entity\Attribute\Option\CollectionFactory $attrOptionCollectionFactory
* @param \Magento\Catalog\Model\Resource\Product\Collection $productCollection
*/
public function __construct(\Magento\Catalog\Api\CategoryManagementInterface $categoryReadService, \Magento\Eav\Model\Config $eavConfig, \Magento\Catalog\Model\Resource\Product\Attribute\CollectionFactory $attributeCollectionFactory, \Magento\Eav\Model\Resource\Entity\Attribute\Option\CollectionFactory $attrOptionCollectionFactory, \Magento\Catalog\Model\Resource\Product\Collection $productCollection)
{
$this->categoryReadService = $categoryReadService;
$this->eavConfig = $eavConfig;
$this->attributeCollectionFactory = $attributeCollectionFactory;
$this->attrOptionCollectionFactory = $attrOptionCollectionFactory;
$this->productCollection = $productCollection->removeAllItems()->clear()->addAttributeToSelect('sku');
}