--- a/server/src/app/Libraries/CocoonUtils.php	Tue Nov 17 13:11:55 2015 +0100
+++ b/server/src/app/Libraries/CocoonUtils.php	Fri Nov 27 17:59:36 2015 +0100
@@ -13,6 +13,15 @@
     }
 
     /**
+     * Extract id form corpus url.
+     *
+     * @return string
+     */
+    public static function getIdFromCorpusUri($uri) {
+        return substr($uri, strlen(config('corpusparole.corpus_doc_id_base_uri')));
+    }
+
+    /**
      * Create a Corpus resource id (purl url)
      *
      * @return string