symfony#39102: thank you fabbot.

src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/SerializerDebugPass.php

@@ -67,7 +67,7 @@ private function decorateNormalizer(string $id, ContainerBuilder $container): vo
             $decoratorClass = TraceableDenormalizer::class;
         } else {
             throw new RuntimeException(
-                sprintf("Normalizer with id %s neither implements NormalizerInterface nor DenormalizerInterface!", $id)
+                sprintf('Normalizer with id %s neither implements NormalizerInterface nor DenormalizerInterface!', $id)
             );
         }
 

src/Symfony/Component/Serializer/DataCollector/SerializerDataCollector.php

@@ -1,6 +1,13 @@
 <?php
 
-declare(strict_types=1);
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 
 namespace Symfony\Component\Serializer\DataCollector;
 

src/Symfony/Component/Serializer/Debug/Normalizer/AbstractTraceableNormalizer.php

@@ -30,6 +30,7 @@ abstract class AbstractTraceableNormalizer implements SerializerAwareInterface,
 
     /**
      * AbstractTraceableNormalizer constructor.
+     *
      * @param DenormalizerInterface|NormalizerInterface $delegate
      */
     public function __construct($delegate)
@@ -95,17 +96,11 @@ public function setNormalizer(NormalizerInterface $normalizer): void
         }
     }
 
-    /**
-     * @return array
-     */
     public function getNormalizations(): array
     {
         return $this->normalizations;
     }
 
-    /**
-     * @return array
-     */
     public function getDenormalizations(): array
     {
         return $this->denormalizations;

src/Symfony/Component/Serializer/Debug/Normalizer/Denormalization.php

@@ -15,7 +15,7 @@
 use Symfony\Component\Serializer\Normalizer\DenormalizerInterface;
 
 /**
- * Class Denormalization
+ * Class Denormalization.
  */
 final class Denormalization extends Deserialization
 {

src/Symfony/Component/Serializer/Debug/Normalizer/Normalization.php

@@ -15,7 +15,7 @@
 use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
 
 /**
- * Class Normalization
+ * Class Normalization.
  */
 final class Normalization extends Serialization
 {

src/Symfony/Component/Serializer/Tests/Debug/TraceableSerializerTest.php

@@ -17,7 +17,7 @@
 use Symfony\Component\Serializer\SerializerInterface;
 
 /**
- * Class TraceableSerializerTest
+ * Class TraceableSerializerTest.
  */
 final class TraceableSerializerTest extends TestCase
 {
@@ -66,7 +66,6 @@ public function testSerializeMustCallDelegate(): void
 
     public function testTracerAddsSerializationToSerializationsStack(): void
     {
-
         $this->assertSerializeToBeCalled();
 
         $this->callSerialize();
@@ -118,7 +117,7 @@ public function testCollectedDeserializationContainsResultOfDescerialization():
         self::assertSame($this->something, $deserializations[0]->result);
     }
 
-    public function testResetClearsSerializationsAndDeserializationsStacks():void
+    public function testResetClearsSerializationsAndDeserializationsStacks(): void
     {
         $this->assertSerializeToBeCalled();
         $this->assertDeserializeToBeCalled();