Merge branch '4.4' into 5.1

* 4.4:
  [Sendgrid-Mailer] Fixed envelope recipients on sendgridApiTransport
  mark the AssertingContextualValidator class as internal
  Fix the parameter names in the SecurityFactoryInterface::create() method
  [Serializer][ClassDiscriminatorMapping] Fix getMappedObjectType() when a discriminator child extends another one
  make return type correct

src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/SecurityFactoryInterface.php

@@ -29,7 +29,7 @@ interface SecurityFactoryInterface
      *               - the listener id
      *               - the entry point id
      */
-    public function create(ContainerBuilder $container, string $id, array $config, string $userProvider, ?string $defaultEntryPoint);
+    public function create(ContainerBuilder $container, string $id, array $config, string $userProviderId, ?string $defaultEntryPointId);
 
     /**
      * Defines the position at which the provider is called.

src/Symfony/Component/Form/FormView.php

@@ -148,7 +148,7 @@ class FormView implements \ArrayAccess, \IteratorAggregate, \Countable
     /**
      * Returns an iterator to iterate over children (implements \IteratorAggregate).
      *
-     * @return \ArrayIterator|FormView[] The iterator
+     * @return \ArrayIterator<string, FormView> The iterator
      */
     public function getIterator()
     {

src/Symfony/Component/Mailer/Bridge/Sendgrid/Tests/Transport/SendgridApiTransportTest.php

@@ -192,4 +192,34 @@ class SendgridApiTransportTest extends TestCase
         $this->assertArrayHasKey('email', $payload['reply_to']);
         $this->assertSame($replyTo, $payload['reply_to']['email']);
     }
+
+    public function testEnvelopeSenderAndRecipients()
+    {
+        $from = 'from@example.com';
+        $to = 'to@example.com';
+        $envelopeFrom = 'envelopefrom@example.com';
+        $envelopeTo = 'envelopeto@example.com';
+        $email = new Email();
+        $email->from($from)
+            ->to($to)
+            ->cc('cc@example.com')
+            ->bcc('bcc@example.com')
+            ->text('content');
+        $envelope = new Envelope(new Address($envelopeFrom), [new Address($envelopeTo)]);
+
+        $transport = new SendgridApiTransport('ACCESS_KEY');
+        $method = new \ReflectionMethod(SendgridApiTransport::class, 'getPayload');
+        $method->setAccessible(true);
+        $payload = $method->invoke($transport, $email, $envelope);
+
+        $this->assertArrayHasKey('from', $payload);
+        $this->assertArrayHasKey('email', $payload['from']);
+        $this->assertSame($envelopeFrom, $payload['from']['email']);
+
+        $this->assertArrayHasKey('personalizations', $payload);
+        $this->assertArrayHasKey('to', $payload['personalizations'][0]);
+        $this->assertArrayHasKey('email', $payload['personalizations'][0]['to'][0]);
+        $this->assertCount(1, $payload['personalizations'][0]['to']);
+        $this->assertSame($envelopeTo, $payload['personalizations'][0]['to'][0]['email']);
+    }
 }

src/Symfony/Component/Mailer/Bridge/Sendgrid/Transport/SendgridApiTransport.php

@@ -84,7 +84,7 @@ class SendgridApiTransport extends AbstractApiTransport
         }
 
         $personalization = [
-            'to' => array_map($addressStringifier, $email->getTo()),
+            'to' => array_map($addressStringifier, $this->getRecipients($email, $envelope)),
             'subject' => $email->getSubject(),
         ];
         if ($emails = array_map($addressStringifier, $email->getCc())) {

src/Symfony/Component/Serializer/Mapping/ClassDiscriminatorMapping.php

@@ -23,6 +23,18 @@ class ClassDiscriminatorMapping
     {
         $this->typeProperty = $typeProperty;
         $this->typesMapping = $typesMapping;
+
+        uasort($this->typesMapping, static function (string $a, string $b): int {
+            if (is_a($a, $b, true)) {
+                return -1;
+            }
+
+            if (is_a($b, $a, true)) {
+                return 1;
+            }
+
+            return 0;
+        });
     }
 
     public function getTypeProperty(): string

src/Symfony/Component/Serializer/Tests/Fixtures/AbstractDummy.php

@@ -16,7 +16,8 @@ use Symfony\Component\Serializer\Annotation\DiscriminatorMap;
 /**
  * @DiscriminatorMap(typeProperty="type", mapping={
  *    "first"="Symfony\Component\Serializer\Tests\Fixtures\AbstractDummyFirstChild",
- *    "second"="Symfony\Component\Serializer\Tests\Fixtures\AbstractDummySecondChild"
+ *    "second"="Symfony\Component\Serializer\Tests\Fixtures\AbstractDummySecondChild",
+ *    "third"="Symfony\Component\Serializer\Tests\Fixtures\AbstractDummyThirdChild",
  * })
  */
 abstract class AbstractDummy

src/Symfony/Component/Serializer/Tests/Fixtures/AbstractDummyThirdChild.php

@@ -0,0 +1,16 @@
+<?php
+
+/*
+ * 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\Tests\Fixtures;
+
+final class AbstractDummyThirdChild extends AbstractDummyFirstChild
+{
+}

src/Symfony/Component/Serializer/Tests/Mapping/ClassDiscriminatorMappingTest.php

@@ -15,6 +15,7 @@ use PHPUnit\Framework\TestCase;
 use Symfony\Component\Serializer\Mapping\ClassDiscriminatorMapping;
 use Symfony\Component\Serializer\Tests\Fixtures\AbstractDummyFirstChild;
 use Symfony\Component\Serializer\Tests\Fixtures\AbstractDummySecondChild;
+use Symfony\Component\Serializer\Tests\Fixtures\AbstractDummyThirdChild;
 
 /**
  * @author Samuel Roze <samuel.roze@gmail.com>
@@ -35,9 +36,11 @@ class ClassDiscriminatorMappingTest extends TestCase
     {
         $mapping = new ClassDiscriminatorMapping('type', [
             'first' => AbstractDummyFirstChild::class,
+            'third' => AbstractDummyThirdChild::class,
         ]);
 
         $this->assertEquals('first', $mapping->getMappedObjectType(new AbstractDummyFirstChild()));
         $this->assertNull($mapping->getMappedObjectType(new AbstractDummySecondChild()));
+        $this->assertSame('third', $mapping->getMappedObjectType(new AbstractDummyThirdChild()));
     }
 }

src/Symfony/Component/Serializer/Tests/Mapping/Loader/AnnotationLoaderTest.php

@@ -21,6 +21,7 @@ use Symfony\Component\Serializer\Tests\Fixtures\AbstractDummy;
 use Symfony\Component\Serializer\Tests\Fixtures\AbstractDummyFirstChild;
 use Symfony\Component\Serializer\Tests\Fixtures\AbstractDummySecondChild;
 use Symfony\Component\Serializer\Tests\Fixtures\IgnoreDummy;
+use Symfony\Component\Serializer\Tests\Fixtures\AbstractDummyThirdChild;
 use Symfony\Component\Serializer\Tests\Mapping\TestClassMetadataFactory;
 
 /**
@@ -66,6 +67,7 @@ class AnnotationLoaderTest extends TestCase
         $expected = new ClassMetadata(AbstractDummy::class, new ClassDiscriminatorMapping('type', [
             'first' => AbstractDummyFirstChild::class,
             'second' => AbstractDummySecondChild::class,
+            'third' => AbstractDummyThirdChild::class,
         ]));
 
         $expected->addAttributeMetadata(new AttributeMetadata('foo'));

src/Symfony/Component/Validator/Test/ConstraintValidatorTestCase.php

@@ -385,6 +385,9 @@ class ConstraintViolationAssertion
     }
 }
 
+/**
+ * @internal
+ */
 class AssertingContextualValidator implements ContextualValidatorInterface
 {
     private $context;