Fixes incorrectly cased namespace usages.

app/code/Magento/Sales/Test/Unit/Block/Adminhtml/Order/Create/Items/GridTest.php

@@ -113,7 +113,7 @@ protected function setUp(): void
             ->setMethods(['methods'])
             ->getMock();
 
-        $giftMessageSave = $this->getMockBuilder(\Magento\Giftmessage\Model\Save::class)
+        $giftMessageSave = $this->getMockBuilder(\Magento\GiftMessage\Model\Save::class)
             ->disableOriginalConstructor()
             ->getMock();
 

app/code/Magento/Tax/Block/Item/Price/Renderer.php

@@ -9,7 +9,7 @@
 use Magento\Framework\Pricing\Render as PricingRender;
 use Magento\Framework\View\Element\Template\Context;
 use Magento\Quote\Model\Quote\Item\AbstractItem as QuoteItem;
-use Magento\Sales\Model\Order\CreditMemo\Item as CreditMemoItem;
+use Magento\Sales\Model\Order\Creditmemo\Item as CreditMemoItem;
 use Magento\Sales\Model\Order\Invoice\Item as InvoiceItem;
 use Magento\Sales\Model\Order\Item as OrderItem;
 use Magento\Tax\Helper\Data as TaxHelper;
@@ -106,6 +106,8 @@ public function setZone($zone)
     }
 
     /**
+     * Get store id
+     *
      * @return int|null|string
      */
     public function getStoreId()
@@ -201,8 +203,7 @@ public function formatPrice($price)
     }
 
     /**
-     * Get item price in display currency or order currency depending
-     * on item type
+     * Get item price in display currency or order currency depending on item type
      *
      * @return float
      */

app/code/Magento/Tax/Model/Api/SearchCriteria/JoinProcessor/CalculationData.php

@@ -8,24 +8,22 @@
 use Magento\Framework\Api\SearchCriteria\CollectionProcessor\JoinProcessor\CustomJoinInterface;
 use Magento\Framework\Data\Collection\AbstractDb;
 
-/**
- * Class CalculationData
- * @package Magento\Tax\Model\Api\SearchCriteria\JoinProcessor
- */
 class CalculationData implements CustomJoinInterface
 {
     /** Alias of table, that will be joined */
-    const CALCULATION_DATA_ALIAS = "cd";
+    public const CALCULATION_DATA_ALIAS = "cd";
 
     /**
+     * Apply join to collection
+     *
      * @param \Magento\Tax\Model\ResourceModel\Calculation\Rule\Collection $collection
      * @return bool
      */
     public function apply(AbstractDb $collection)
     {
         $isNotApplied = !array_key_exists(
             self::CALCULATION_DATA_ALIAS,
-            $collection->getSelect()->getPart(\Magento\Framework\Db\Select::FROM)
+            $collection->getSelect()->getPart(\Magento\Framework\DB\Select::FROM)
         );
         if ($isNotApplied) {
             $collection->joinCalculationData(self::CALCULATION_DATA_ALIAS);

lib/internal/Magento/Framework/Setup/Declaration/Schema/DataSavior/SelectGenerator.php

@@ -7,7 +7,7 @@
 namespace Magento\Framework\Setup\Declaration\Schema\DataSavior;
 
 use Magento\Framework\App\ResourceConnection;
-use Magento\Framework\Db\Select;
+use Magento\Framework\DB\Select;
 
 /**
  * Yields data from database by select objects