Merge branch '6.0' into 6.1

* 6.0:
  Use a better name than "class Foo"
  Update uid.rst

Author: javiereguiluz

components/event_dispatcher.rst

@@ -489,9 +489,9 @@ is dispatched, are passed as arguments to the listener::
     use Symfony\Contracts\EventDispatcher\Event;
     use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
 
-    class Foo
+    class MyListener
     {
-        public function myEventListener(Event $event, $eventName, EventDispatcherInterface $dispatcher)
+        public function myEventListener(Event $event, string $eventName, EventDispatcherInterface $dispatcher)
         {
             // ... do something with the event name
         }

components/uid.rst

@@ -106,7 +106,10 @@ UUID objects created with the ``Uuid`` class can use the following methods
 
     // getting the UUID datetime (it's only available in certain UUID types)
     $uuid = Uuid::v1();
-    $uuid->getDateTime();  // returns a \DateTimeImmutable instance
+    $uuid->getDateTime(); // returns a \DateTimeImmutable instance
+
+    // checking if a given value is valid as UUID
+    $isValid = Uuid::isValid($uuid); // true or false
 
     // comparing UUIDs and checking for equality
     $uuid1 = Uuid::v1();