public function aroundAddFilter(
        \Magento\CatalogInventory\Ui\DataProvider\Product\AddQuantityFilterToCollection $subject,
        \Closure $proceed,
        \Magento\Catalog\Model\ResourceModel\Product\Collection $collection,
        $field,
        $condition = null
    ) {
        /* skip identical conditions () */
        $regKey = print_r($condition, true);
        if (!isset($this->_regCond[$regKey])) {
            $conn = $collection->getConnection();
            $select = $collection->getSelect();
            $equation = $this->_repoModifierProductGFrid->getEquationQty();
            $prepared = $conn->prepareSqlCondition($equation, $condition);
            $select->having($prepared);
            $this->_regCond[$regKey] = true;
        }
        return;
    }