UPGRADE FROM 4.x to 5.0

Config

Added the getChildNodeDefinitions() method to ParentNodeDefinitionInterface.

EventDispatcher

The TraceableEventDispatcherInterface has been removed.

FrameworkBundle

Removed support for bundle:controller:action and service:action syntaxes to reference controllers. Use serviceOrFqcn::method instead where serviceOrFqcn is either the service ID when using controllers as services or the FQCN of the controller.

Before:

bundle_controller:
    path: /
    defaults:
        _controller: FrameworkBundle:Redirect:redirect

service_controller:
    path: /
    defaults:
        _controller: app.my_controller:myAction

After:

bundle_controller:
    path: /
    defaults:
        _controller: Symfony\Bundle\FrameworkBundle\Controller\RedirectController::redirectAction

service_controller:
    path: /
    defaults:
        _controller: app.my_controller::myAction


* Removed `Symfony\Bundle\FrameworkBundle\Controller\ControllerNameParser`
* Using a `RouterInterface` that does not implement the `WarmableInterface` is not supported anymore.
* The `RequestDataCollector` class has been removed. Use the `Symfony\Component\HttpKernel\DataCollector\RequestDataCollector` class instead.

HttpFoundation
--------------

* The `$size` argument of the `UploadedFile` constructor has been removed.
* The `getClientSize()` method of the `UploadedFile` class has been removed.

Security
--------

* The `ContextListener::setLogoutOnUserChange()` method has been removed.
* The `Symfony\Component\Security\Core\User\AdvancedUserInterface` has been removed.

SecurityBundle
--------------

* The `logout_on_user_change` firewall option has been removed.
* The `SecurityUserValueResolver` class has been removed.

Translation
-----------

* The `FileDumper::setBackup()` method has been removed.
* The `TranslationWriter::disableBackup()` method has been removed.

TwigBundle
----------

* The default value (`false`) of the `twig.strict_variables` configuration option has been changed to `%kernel.debug%`.

Validator
--------

* The `Email::__construct()` 'strict' property has been removed. Use 'mode'=>"strict" instead.
* Calling `EmailValidator::__construct()` method with a boolean parameter has been removed, use `EmailValidator("strict")` instead.
* Removed the `checkDNS` and `dnsMessage` options from the `Url` constraint.

Workflow
--------

* `add` method has been removed use `addWorkflow` method in `Workflow\Registry` instead.
* `SupportStrategyInterface` has been removed, use `WorkflowSupportStrategyInterface` instead.
* `ClassInstanceSupportStrategy` has been removed, use `InstanceOfSupportStrategy` instead.

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