Add documentation about children method in DomCrawelr

Einenlum · javiereguiluz · commit cbb057fed39c · 2018-09-11T10:29:56.000+02:00
diff --git a/components/dom_crawler.rst b/components/dom_crawler.rst
@@ -182,6 +182,13 @@ Get all the child or parent nodes::
     $crawler->filter('body')->children();
     $crawler->filter('body > p')->parents();
 
+Get all the direct child nodes matching a CSS selector::
+
+    $crawler->filter('body')->children('p.lorem');
+
+.. versionadded:: 4.2
+    The optional selector in ``children($selector)`` method was introduced in Symfony 4.2.
+
 .. note::
 
     All the traversal methods return a new :class:`Symfony\\Component\\DomCrawler\\Crawler`
