code: function() {
        if (this.__currentContextWithListener) {
          this.stopListening(this.__currentContextWithListener, this.__currentContextEventName, this.retrieve);
          this.stopListening(this.__currentContextWithListener, 'fetched:ids', this.retrieve);
          delete this.__currentContextWithListener;
          delete this.__currentContextEventName;
        }
      }
docs: Removes the listener added by listenToIdsPropertyChangeEvent().
  @method stopListeningToIdsPropertyChangeEvent