     }
 
     // MARK: - Collection Controllers
-
-    fileprivate var _KVOContext: Int = 0
 
     // The initial instances are proxies
     // On document deserialization the collection are populated.


    open var trackingStack=[(result:Any?, context:Consignable)]()

    // MARK : - new User facility

    /**
    * Creates a new user

        }
    }


    
    /**
