private void detach_Pivots(Pivot entity)
 {
     this.SendPropertyChanging();
     entity.Users = null;
 }
 private void attach_Pivots(Pivot entity)
 {
     this.SendPropertyChanging();
     entity.Users = this;
 }
 partial void UpdatePivot(Pivot instance);
 partial void DeletePivot(Pivot instance);
 partial void InsertPivot(Pivot instance);