         // No implementation required for XMLFileStore
     }
     
-    //MARK: - Relationship
+    public func readNode(uid: UID?) -> Node? {
+        if uid != nil {
+           return self.nodeDict[uid!]
+        }
+        return nil
+    }
+    
+    //MARK: - Relationship TOOD: see node 
     
     //var relationshipList = [Relationship]()
     var maxRelationshipUID : UID = 0

        }
    }
    
    /**
    
    func writeXMLFile() throws {
        

    
     //MARK: - Persistent
    
   /**
    
    func readXMLFile() throws {
        
        //var error : NSError?
