public function addData($storeId, array $indexData)
    {
        $priceData = $this->resourceModel->loadPriceData($storeId, array_keys($indexData));

        foreach ($priceData as $priceDataRow) {
            $productId     = (int) $priceDataRow['entity_id'];
            $productTypeId = $indexData[$productId]['type_id'];
            $priceModifier = $this->getPriceDataReader($productTypeId);

            $originalPrice = $priceModifier->getOriginalPrice($priceDataRow);
            $price         = $priceModifier->getPrice($priceDataRow);

            $indexData[$productId]['price'][] = [
                'price'             => $price,
                'original_price'    => $originalPrice,
                'is_discount'       => $price < $originalPrice,
                'customer_group_id' => $priceDataRow['customer_group_id'],
            ];

            if (!isset($indexData[$productId]['indexed_attributes'])) {
                $indexData[$productId]['indexed_attributes'] = ['price'];
            } elseif (!in_array('price', $indexData[$productId]['indexed_attributes'])) {
                // Add price only one time.
                $indexData[$productId]['indexed_attributes'][] = 'price';
            }
        }

        return $indexData;
    }