Merge branch '6.4' into 7.0

* 6.4:
  -
  Add ENV processor example

Author: OskarStark

service_container/autowiring.rst

@@ -610,7 +610,8 @@ logic about those arguments::
 
 The ``#[Autowire]`` attribute can also be used for :ref:`parameters <service-parameters>`,
 :doc:`complex expressions </service_container/expression_language>` and even
-:ref:`environment variables <config-env-vars>`::
+:ref:`environment variables <config-env-vars>` ,
+:doc:`including env variable processors </configuration/env_var_processors>`::
 
     // src/Service/MessageGenerator.php
     namespace App\Service;
@@ -636,6 +637,10 @@ The ``#[Autowire]`` attribute can also be used for :ref:`parameters <service-par
             // environment variables
             #[Autowire(env: 'SOME_ENV_VAR')]
             string $senderName,
+
+            // environment variables with processors
+            #[Autowire(env: 'bool:SOME_BOOL_ENV_VAR')]
+            bool $allowAttachments,
         ) {
         }
         // ...