Inheritance: INotifyPropertyChanging, INotifyPropertyChanged
 partial void DeleteReferringSite(ReferringSite instance);
 partial void InsertReferringSite(ReferringSite instance);
 partial void UpdateReferringSite(ReferringSite instance);
		private void detach_ReferringSites(ReferringSite entity)
		{
			this.SendPropertyChanging();
			entity.TrafficType1 = null;
		}