partial void DeleteSlide(Slide instance);
 partial void UpdateSlide(Slide instance);
		private void detach_Slides(Slide entity)
		{
			this.SendPropertyChanging();
			entity.Concept = null;
		}
 partial void InsertSlide(Slide instance);
		private void attach_Slides(Slide entity)
		{
			this.SendPropertyChanging();
			entity.Concept = this;
		}