/**
  * @param QuoteAddress $address
  * @param bool $useBaseCurrency
  * @return \Magento\Tax\Api\Data\QuoteDetailsItemInterface
  */
 public function getShippingDataObject(QuoteAddress $address, $useBaseCurrency)
 {
     if ($address->getShippingTaxCalculationAmount() === null) {
         //Save the original shipping amount because shipping amount will be overridden
         //with shipping amount excluding tax
         $address->setShippingTaxCalculationAmount($address->getShippingAmount());
         $address->setBaseShippingTaxCalculationAmount($address->getBaseShippingAmount());
     }
     if ($address->getShippingTaxCalculationAmount() !== null) {
         /** @var \Magento\Tax\Api\Data\QuoteDetailsItemInterface $itemDataObject */
         $itemDataObject = $this->quoteDetailsItemDataObjectFactory->create()->setType(self::ITEM_TYPE_SHIPPING)->setCode(self::ITEM_CODE_SHIPPING)->setQuantity(1);
         if ($useBaseCurrency) {
             $itemDataObject->setUnitPrice($address->getBaseShippingTaxCalculationAmount());
         } else {
             $itemDataObject->setUnitPrice($address->getShippingTaxCalculationAmount());
         }
         if ($address->getShippingDiscountAmount()) {
             if ($useBaseCurrency) {
                 $itemDataObject->setDiscountAmount($address->getBaseShippingDiscountAmount());
             } else {
                 $itemDataObject->setDiscountAmount($address->getShippingDiscountAmount());
             }
         }
         $itemDataObject->setTaxClassKey($this->taxClassKeyDataObjectFactory->create()->setType(TaxClassKeyInterface::TYPE_ID)->setValue($this->_config->getShippingTaxClass($address->getQuote()->getStore())));
         $itemDataObject->setIsTaxIncluded($this->_config->shippingPriceIncludesTax($address->getQuote()->getStore()));
         return $itemDataObject;
     }
     return null;
 }