Added the new doc in a note

javiereguiluz · web-flow · commit 82ea3ace2ef6 · 2018-01-12T16:44:26.000+01:00
diff --git a/components/http_foundation.rst b/components/http_foundation.rst
@@ -400,15 +400,20 @@ of methods to manipulate the HTTP headers related to the cache:
 * :method:`Symfony\\Component\\HttpFoundation\\Response::setEtag`;
 * :method:`Symfony\\Component\\HttpFoundation\\Response::setVary`;
 
-The methods :method:`Symfony\\Component\\HttpFoundation\\Response::setExpires`, :method:`Symfony\\Component\\HttpFoundation\\Response::setLastModified` and :method:`Symfony\\Component\\HttpFoundation\\Response::setData` accepts an immutable date object.
+.. note::
+
+    The methods :method:`Symfony\\Component\\HttpFoundation\\Response::setExpires`,
+    :method:`Symfony\\Component\\HttpFoundation\\Response::setLastModified` and 
+    :method:`Symfony\\Component\\HttpFoundation\\Response::setDate` accept any
+    object that implements ``\DateTimeInterface``, including immutable date objects.
 
 The :method:`Symfony\\Component\\HttpFoundation\\Response::setCache` method
 can be used to set the most commonly used cache information in one method
 call::
 
     $response->setCache(array(
         'etag'          => 'abcdef',
-        'last_modified' => new \DateTime(), // Any object implementing \DateTimeInterface
+        'last_modified' => new \DateTime(),
         'max_age'       => 600,
         's_maxage'      => 600,
         'private'       => false,
