private void detach_GameActivities(GameActivity entity)
 {
     this.SendPropertyChanging();
     entity.Player = null;
 }
 partial void DeleteGameActivity(GameActivity instance);
 partial void InsertGameActivity(GameActivity instance);
 partial void UpdateGameActivity(GameActivity instance);
 private void attach_GameActivities(GameActivity entity)
 {
     this.SendPropertyChanging();
     entity.Game = this;
 }