Update dockblocks to return null

Author: sertlab

app/code/Magento/Sales/Api/Data/OrderInterface.php

@@ -5,8 +5,6 @@
  */
 namespace Magento\Sales\Api\Data;
 
-use Magento\Customer\Model\Customer;
-
 /**
  * Order interface.
  *
@@ -912,12 +910,6 @@ public function getCreatedAt();
      */
     public function setCreatedAt($createdAt);
 
-    /**
-     * Gets the customer from Order
-     * @return Customer
-     */
-    public function getCustomer();
-    
     /**
      * Gets the customer date-of-birth (DOB) for the order.
      *

app/code/Magento/Sales/Model/Order.php

@@ -6,7 +6,6 @@
 namespace Magento\Sales\Model;
 
 use Magento\Config\Model\Config\Source\Nooptreq;
-use Magento\Customer\Api\CustomerRepositoryInterface;
 use Magento\Directory\Model\Currency;
 use Magento\Framework\Api\AttributeValueFactory;
 use Magento\Framework\Api\SearchCriteriaBuilder;
@@ -52,6 +51,7 @@
  * @method bool hasCustomerNoteNotify()
  * @method bool hasForcedCanCreditmemo()
  * @method bool getIsInProcess()
+ * @method \Magento\Customer\Model\Customer|null getCustomer()
  * @method \Magento\Sales\Model\Order setSendEmail(bool $value)
  * @SuppressWarnings(PHPMD.ExcessivePublicCount)
  * @SuppressWarnings(PHPMD.TooManyFields)
@@ -307,11 +307,6 @@ class Order extends AbstractModel implements EntityInterface, OrderInterface
      */
     private $scopeConfig;
 
-    /**
-     * @var CustomerRepositoryInterface
-     */
-    private $_customerRepositoryInterface;
-
     /**
      * @param \Magento\Framework\Model\Context $context
      * @param \Magento\Framework\Registry $registry
@@ -345,7 +340,6 @@ class Order extends AbstractModel implements EntityInterface, OrderInterface
      * @param OrderItemRepositoryInterface $itemRepository
      * @param SearchCriteriaBuilder $searchCriteriaBuilder
      * @param ScopeConfigInterface $scopeConfig
-     * @param CustomerRepositoryInterface $customerRepositoryInterface
      * @SuppressWarnings(PHPMD.ExcessiveParameterList)
      */
     public function __construct(
@@ -372,7 +366,6 @@ public function __construct(
         \Magento\Sales\Model\ResourceModel\Order\Shipment\Track\CollectionFactory $trackCollectionFactory,
         \Magento\Sales\Model\ResourceModel\Order\CollectionFactory $salesOrderCollectionFactory,
         PriceCurrencyInterface $priceCurrency,
-        CustomerRepositoryInterface $customerRepositoryInterface,
         \Magento\Catalog\Model\ResourceModel\Product\CollectionFactory $productListFactory,
         \Magento\Framework\Model\ResourceModel\AbstractResource $resource = null,
         \Magento\Framework\Data\Collection\AbstractDb $resourceCollection = null,
@@ -410,7 +403,6 @@ public function __construct(
         $this->searchCriteriaBuilder = $searchCriteriaBuilder ?: ObjectManager::getInstance()
             ->get(SearchCriteriaBuilder::class);
         $this->scopeConfig = $scopeConfig ?: ObjectManager::getInstance()->get(ScopeConfigInterface::class);
-        $this->_customerRepositoryInterface = $customerRepositoryInterface;
 
         parent::__construct(
             $context,
@@ -570,19 +562,6 @@ public function getStore()
         return $this->_storeManager->getStore();
     }
 
-    /**
-     * Returns Customer
-     *
-     * @return \Magento\Customer\Api\Data\CustomerInterface
-     * @throws LocalizedException
-     * @throws \Magento\Framework\Exception\NoSuchEntityException
-     */
-    public function getCustomer()
-    {
-        $customerId = $this->getData(OrderInterface::CUSTOMER_ID);
-        return $this->_customerRepositoryInterface->getById($customerId);
-    }
-
     /**
      * Retrieve order cancel availability
      *