function initialize()
 {
     if (!$this->fetched) {
         // Fetch this root directory
         $this->childNodes = get_node_and_contents($this->userID, $this->userID);
         $this->fetched = true;
     }
 }
 function initialize()
 {
     if (!$this->fetched) {
         // Fetch this folder directory and its children
         $this->childNodes = get_node_and_contents($this->node['ID'], $this->node['OwnerID']);
         $this->fetched = true;
     }
 }