commit 1e4b9c2d1d0a31d1112b1decdbae7e37e2f226fc
Author: Joel Pittet <joel@pittet.ca>
Date:   Sat Jan 4 20:59:45 2014 -0800

    add getName back in because it's part of the interface.

diff --git a/core/lib/Drupal/Core/Template/TwigExtension.php b/core/lib/Drupal/Core/Template/TwigExtension.php
index 250dff3..28e96aa 100644
--- a/core/lib/Drupal/Core/Template/TwigExtension.php
+++ b/core/lib/Drupal/Core/Template/TwigExtension.php
@@ -44,7 +44,7 @@ public function getFilters() {
       // @see TwigNodeTrans::compileString()
       'passthrough' => new \Twig_Filter_Function('twig_raw_filter'),
       'placeholder' => new \Twig_Filter_Function('twig_raw_filter'),
-      // @todo Consider renaming to exclude or something.
+      // @todo Consider renaming to 'exclude' or 'without'.
       'hide' => new \Twig_Filter_Function('twig_hide'),
     );
   }
@@ -68,5 +68,9 @@ public function getTokenParsers() {
       new TwigTransTokenParser(),
     );
   }
+
+  public function getName() {
+    return 'drupal_core';
+  }
 }