feature #23035 [3.4] Deprecate passing a concrete service in optional cache warmers (romainneutron)

This PR was merged into the 3.4 branch.

Discussion
----------

[3.4] Deprecate passing a concrete service in optional cache warmers

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | no
| New feature?  | no <!-- don't forget updating src/**/CHANGELOG.md files -->
| BC breaks?    | no
| Deprecations? | yes <!-- don't forget updating UPGRADE-*.md files -->
| Tests pass?   | yes
| Fixed tickets | N/A
| License       | MIT

Commits
-------

b9c91cd Deprecate passing a concrete service in optional cache warmers

Author: nicolas-grekas

CacheWarmer/RouterCacheWarmer.php

@@ -19,6 +19,8 @@
  * Generates the router matcher and generator classes.
  *
  * @author Fabien Potencier <[email protected]>
+ *
+ * @final since version 3.4, to be given a container instead in 4.0
  */
 class RouterCacheWarmer implements CacheWarmerInterface
 {

CacheWarmer/TranslationsCacheWarmer.php

@@ -30,7 +30,7 @@ class TranslationsCacheWarmer implements CacheWarmerInterface, ServiceSubscriber
     /**
      * TranslationsCacheWarmer constructor.
      *
-     * @param ContainerInterface|TranslatorInterface $container
+     * @param ContainerInterface $container
      */
     public function __construct($container)
     {
@@ -39,6 +39,7 @@ public function __construct($container)
             $this->container = $container;
         } elseif ($container instanceof TranslatorInterface) {
             $this->translator = $container;
+            @trigger_error(sprintf('Using a "%s" as first argument of %s is deprecated since version 3.4 and will be unsupported in version 4.0. Use a %s instead.', TranslatorInterface::class, __CLASS__, ContainerInterface::class), E_USER_DEPRECATED);
         } else {
             throw new \InvalidArgumentException(sprintf('%s only accepts instance of Psr\Container\ContainerInterface as first argument.', __CLASS__));
         }