commit dee86d1c028b3d8c432e88e80a748a5598879c8e
Author: fago <fago@wolfgangziegler.net>
Date:   Fri Mar 27 09:23:20 2015 +0100

    Added comment.

diff --git a/core/lib/Drupal/Core/TypedData/TypedDataManager.php b/core/lib/Drupal/Core/TypedData/TypedDataManager.php
index ebdc1e5..7c1d783 100644
--- a/core/lib/Drupal/Core/TypedData/TypedDataManager.php
+++ b/core/lib/Drupal/Core/TypedData/TypedDataManager.php
@@ -443,6 +443,7 @@ public function getCanonicalRepresentation(TypedDataInterface $data) {
     if ($data_definition instanceof ListDataDefinitionInterface) {
       $data_definition = $data_definition->getItemDefinition();
     }
+    // Get the plugin definition of the used data type.
     $type_definition = $this->getDefinition($data_definition->getDataType());
     if (!empty($type_definition['unwrap_for_canonical_representation'])) {
       return $data->getValue();