function fetchItemList($sortBy, $offset, $limit, $status, $isRead, $isActive, $parentGroupID)
 {
     $itemParameters = array('offset' => $offset, 'limit' => $limit, 'sort_by' => $sortBy, 'is_read' => $isRead, 'is_active' => $isActive, 'parent_group_id' => $parentGroupID);
     if ($status !== false) {
         $itemParameters['status'] = $status;
     }
     $children = eZCollaborationItem::fetchList($itemParameters);
     if ($children === null) {
         return array('error' => array('error_type' => 'kernel', 'error_code' => eZError::KERNEL_NOT_FOUND));
     }
     return array('result' => $children);
 }
 function itemList($parameters = array())
 {
     return eZCollaborationItem::fetchList(array_merge(array('parent_group_id' => $this->ID), $parameters));
 }