public override void RemoveObject(DataObject dataObject)
 {
     // Do repository specific work
     dataObject.Delete();
 }
 public override void CopyObject(DataObject dataObject)
 {
     // Do repository specific work
     dataObject.Copy();
 }
 public override void AddObject(DataObject dataObject)
 {
     // Do repository specific work
     dataObject.Register();
 }
 public abstract void RemoveObject(DataObject dataObject);
 public abstract void CopyObject(DataObject dataObject);
 public abstract void AddObject(DataObject dataObject);