/**
  * @inheritdoc
  */
 public function __wakeup()
 {
     parent::__wakeup();
     $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
     $this->_indexerEavProcessor = $objectManager->get(\Magento\Catalog\Model\Indexer\Product\Flat\Processor::class);
     $this->_productFlatIndexerProcessor = $objectManager->get(\Magento\Catalog\Model\Indexer\Product\Eav\Processor::class);
     $this->_productFlatIndexerHelper = $objectManager->get(\Magento\Catalog\Helper\Product\Flat\Indexer::class);
     $this->attrLockValidator = $objectManager->get(LockValidatorInterface::class);
 }