Issue #3281473 by Theresa.Grannum: Make all things internal and final in...

Issue #3281473 by Theresa.Grannum: Make all things internal and final in Automatic Updates Extensions

automatic_updates_extensions/src/BatchProcessor.php

@@ -8,8 +8,12 @@ use Symfony\Component\HttpFoundation\RedirectResponse;
 
 /**
  * A batch processor for updates.
+ *
+ * @internal
+ *   This class is an internal part of the module's update handling and
+ *   should not be used by external code.
  */
-class BatchProcessor {
+final class BatchProcessor {
 
   /**
    * The session key under which the stage ID is stored.

automatic_updates_extensions/src/ExtensionUpdater.php

@@ -10,6 +10,10 @@ use Drupal\package_manager\Stage;
 
 /**
  * Defines a service to perform updates for modules and themes.
+ *
+ * @internal
+ *   This class is an internal part of the module's update handling and
+ *   should not be used by external code.
  */
 class ExtensionUpdater extends Stage {
 

automatic_updates_extensions/src/Form/UpdateReady.php

@@ -21,7 +21,7 @@ use Symfony\Component\DependencyInjection\ContainerInterface;
  * @internal
  *   Form classes are internal.
  */
-class UpdateReady extends FormBase {
+final class UpdateReady extends FormBase {
 
   /**
    * The updater service.

automatic_updates_extensions/src/Form/UpdaterForm.php

@@ -16,8 +16,11 @@ use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 
 /**
  * A form for selecting extension updates.
+ *
+ * @internal
+ *   Form classes are internal.
  */
-class UpdaterForm extends FormBase {
+final class UpdaterForm extends FormBase {
 
   use ReadinessTrait;
 

automatic_updates_extensions/src/Validator/UpdateReleaseValidator.php

@@ -11,8 +11,12 @@ use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
 /**
  * Validates that updated projects are secure and supported.
+ *
+ * @internal
+ *   This class is an internal part of the module's update handling and
+ *   should not be used by external code.
  */
-class UpdateReleaseValidator implements EventSubscriberInterface {
+final class UpdateReleaseValidator implements EventSubscriberInterface {
 
   use StringTranslationTrait;