docs: add docs for programmatic logout

security.rst

@@ -1723,6 +1723,45 @@ 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::
+
+    // src/Controller/SecurityController.php
+    namespace App\Controller\SecurityController;
+
+    use Symfony\Bundle\SecurityBundle\Security\Security;
+
+    class SecurityController
+    {
+        public function someAction(Security $security): Response
+        {
+            // logout the user in on the current firewall
+            $response = $security->logout();
+
+            // you can also disable the csrf logout
+            $response = $security->logout(false);
+
+            // ... return $response (if set) or e.g. redirect to the homepage
+        }
+    }
+
+The user will be logout from the firewall of the request. If the request is
+not behind a firewall a ``\LogicException`` will be thrown.
+
 Customizing Logout
 ~~~~~~~~~~~~~~~~~~