diff -r d075bf1addc2 -r 2f03faa51ba1 Model/DocumentTag.php
--- a/Model/DocumentTag.php	Thu Mar 01 18:44:48 2012 +0100
+++ b/Model/DocumentTag.php	Tue Mar 20 11:45:54 2012 +0100
@@ -201,6 +201,16 @@
     {
         return $this->createdAt;
     }
+
+    /**
+    * Set date of creation
+    *
+    * @param DateTime $date
+    */
+    public function setCreatedAt($date)
+    {
+        $this->createdAt = $date;
+    }
     
     
     /**