[PropertyInfo] Make classes final

UPGRADE-3.3.md

@@ -38,6 +38,9 @@ DependencyInjection
  * Using the `PhpDumper` with an uncompiled `ContainerBuilder` is deprecated and
    will not be supported anymore in 4.0.
 
+ * Extending the containers generated by `PhpDumper` is deprecated and won't be
+   supported in 4.0.
+
  * The `DefinitionDecorator` class is deprecated and will be removed in 4.0, use
    the `ChildDefinition` class instead.
 
@@ -82,6 +85,9 @@ Process
 
  * Configuring Windows and sigchild compatibility is deprecated - they will be always enabled in 4.0.
 
+ * Extending `Process::run()`, `Process::mustRun()` and `Process::restart()` is
+   deprecated and won't be supported in 4.0.
+
 Security
 --------
 
@@ -104,6 +110,12 @@ SecurityBundle
  * `UserPasswordEncoderCommand::getContainer()` is deprecated, and this class won't
     extend `ContainerAwareCommand` nor implement `ContainerAwareInterface` anymore in 4.0.
 
+Serializer
+----------
+
+ * Extending `ChainDecoder`, `ChainEncoder`, `ArrayDenormalizer` is deprecated
+   and won't be supported in 4.0.
+
 TwigBridge
 ----------
 

UPGRADE-4.0.md

@@ -48,6 +48,9 @@ DependencyInjection
  * Using the `PhpDumper` with an uncompiled `ContainerBuilder` is not supported
    anymore.
 
+ * Extending the containers generated by `PhpDumper` is not supported
+   anymore.
+
  * The `DefinitionDecorator` class has been removed. Use the `ChildDefinition`
    class instead.
 
@@ -242,6 +245,9 @@ Process
 
  * Configuring Windows and sigchild compatibility is not possible anymore - they are always enabled.
 
+ * Extending `Process::run()`, `Process::mustRun()` and `Process::restart()` is
+   not supported anymore.
+
 Security
 --------
 
@@ -259,6 +265,9 @@ Serializer
    `AbstractNormalizer::instantiateObject()` method when overriding it is not
    supported anymore.
 
+ * Extending `ChainDecoder`, `ChainEncoder`, `ArrayDenormalizer` is not supported
+   anymore.
+
 Translation
 -----------
 

src/Symfony/Component/PropertyInfo/Extractor/PhpDocExtractor.php

@@ -24,6 +24,8 @@ use Symfony\Component\PropertyInfo\Util\PhpDocTypeHelper;
  * Extracts data using a PHPDoc parser.
  *
  * @author Kévin Dunglas <dunglas@gmail.com>
+ *
+ * @final since version 3.3
  */
 class PhpDocExtractor implements PropertyDescriptionExtractorInterface, PropertyTypeExtractorInterface
 {

src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php

@@ -21,6 +21,8 @@ use Symfony\Component\PropertyInfo\Type;
  * Extracts data using the reflection API.
  *
  * @author Kévin Dunglas <dunglas@gmail.com>
+ *
+ * @final since version 3.3
  */
 class ReflectionExtractor implements PropertyListExtractorInterface, PropertyTypeExtractorInterface, PropertyAccessExtractorInterface
 {

src/Symfony/Component/PropertyInfo/Extractor/SerializerExtractor.php

@@ -18,6 +18,8 @@ use Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactoryInterface;
  * Lists available properties using Symfony Serializer Component metadata.
  *
  * @author Kévin Dunglas <dunglas@gmail.com>
+ *
+ * @final since version 3.3
  */
 class SerializerExtractor implements PropertyListExtractorInterface
 {

src/Symfony/Component/PropertyInfo/PropertyInfoCacheExtractor.php

@@ -17,6 +17,8 @@ use Psr\Cache\CacheItemPoolInterface;
  * Adds a PSR-6 cache layer on top of an extractor.
  *
  * @author Kévin Dunglas <dunglas@gmail.com>
+ *
+ * @final since version 3.3
  */
 class PropertyInfoCacheExtractor implements PropertyInfoExtractorInterface
 {

src/Symfony/Component/PropertyInfo/PropertyInfoExtractor.php

@@ -15,6 +15,8 @@ namespace Symfony\Component\PropertyInfo;
  * Default {@see PropertyInfoExtractorInterface} implementation.
  *
  * @author Kévin Dunglas <dunglas@gmail.com>
+ *
+ * @final since version 3.3
  */
 class PropertyInfoExtractor implements PropertyInfoExtractorInterface
 {

src/Symfony/Component/PropertyInfo/Type.php

@@ -15,6 +15,8 @@ namespace Symfony\Component\PropertyInfo;
  * Type value object (immutable).
  *
  * @author Kévin Dunglas <dunglas@gmail.com>
+ *
+ * @final since version 3.3
  */
 class Type
 {