minor #18485 Improve return types (alexandre-daubois)

This PR was merged into the 6.2 branch.

Discussion
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Improve return types

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Commits
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c6b76d8 Improve return types

Author: javiereguiluz

doctrine/associations.rst

@@ -228,7 +228,7 @@ class that will hold these objects:
             }
 
             /**
-             * @return Collection|Product[]
+             * @return Collection<int, Product>
              */
             public function getProducts(): Collection
             {

messenger/handler_results.rst

@@ -90,7 +90,7 @@ wherever you need a query bus behavior instead of the ``MessageBusInterface``::
          *
          * @return mixed The handler returned value
          */
-        public function query($query)
+        public function query($query): mixed
         {
             return $this->handle($query);
         }

security/user_providers.rst

@@ -311,8 +311,6 @@ command will generate a nice skeleton to get you started::
          *
          * If your firewall is "stateless: true" (for a pure API), this
          * method is not called.
-         *
-         * @return UserInterface
          */
         public function refreshUser(UserInterface $user): UserInterface
         {

service_container/injection_types.rst

@@ -180,8 +180,9 @@ In order to use this type of injection, don't forget to configure it:
 .. note::
 
     If you decide to use autowiring, this type of injection requires
-    that you add a ``@return static`` docblock in order for the container
-    to be capable of registering the method.
+    that you add a ``@return static`` docblock or the ``static`` return
+    type in order for the container to be capable of registering
+    the method.
 
 This approach is useful if you need to configure your service according to your needs,
 so, here's the advantages of immutable-setters: