partial void DeleteExamTestVariantPicture(ExamTestVariantPicture instance);
 partial void InsertExamTestVariantPicture(ExamTestVariantPicture instance);
 partial void UpdateExamTestVariantPicture(ExamTestVariantPicture instance);
		private void detach_ExamTestVariantPictures(ExamTestVariantPicture entity)
		{
			this.SendPropertyChanging();
			entity.ExamTestVariant = null;
		}