case EventUpdateNode:
        if v.OldNode != nil {
            return &WatchMessage_Event{Action: WatchActionKindUpdate, Object: &Object{Object: &Object_Node{Node: v.Node}}, OldObject: &Object{Object: &Object_Node{Node: v.OldNode}}}
        } else {
            return &WatchMessage_Event{Action: WatchActionKindUpdate, Object: &Object{Object: &Object_Node{Node: v.Node}}}