docs: add docs for programmatic logout

Author: johnkrovitch

security.rst

@@ -1723,6 +1723,49 @@ Next, you need to create a route for this URL (but not a controller):
 That's it! By sending a user to the ``app_logout`` route (i.e. to ``/logout``)
 Symfony will un-authenticate the current user and redirect them.
 
+Logout programmatically
+-----------------------
+
+.. versionadded:: 6.2
+
+    The :class:`Symfony\Bundle\SecurityBundle\Security\Security <Symfony\\Bundle\\SecurityBundle\\Security\\Security>`
+    class was introduced in Symfony 6.2. Prior to 6.2, it was called
+    ``Symfony\Component\Security\Core\Security``.
+
+.. versionadded:: 6.2
+
+    The :method:`Symfony\\Bundle\\SecurityBundle\\Security\\Security::logout`
+    method was introduced in Symfony 6.2.
+
+You can logout user programmatically using the `logout()` method of the
+:class:`Symfony\\Bundle\\SecurityBundle\\Security\\Security` helper. The user will be logout from the current firewall
+in the request. If the current request is not behind a firewall a ``\LogicException`` will be thrown. ::
+
+    // src/Controller/SecurityController.php
+    namespace App\Controller\SecurityController;
+
+    use App\Security\Authenticator\ExampleAuthenticator;
+    use Symfony\Bundle\SecurityBundle\Security\Security;
+
+    class SecurityController
+    {
+        public function someAction(Security $security): Response
+        {
+            // logout the user in on the current firewall
+            $response = $this->security->logout();
+
+            // You can also disable the csrf logout
+            $response = $this->security->logout(false);
+
+            if ($response !== null) {
+                return $response;
+            }
+
+            // Redirect to the homepage for instance
+            // ...
+        }
+    }
+
 Customizing Logout
 ~~~~~~~~~~~~~~~~~~