partial void DeletePUTour(PUTour instance);
 partial void UpdatePUTour(PUTour instance);
		private void detach_PUTours(PUTour entity)
		{
			this.SendPropertyChanging();
			entity.PUProgram = null;
		}
 partial void InsertPUTour(PUTour instance);
		private void attach_PUTours(PUTour entity)
		{
			this.SendPropertyChanging();
			entity.PUProgram = this;
		}