partial void DeleteHistoryFile(HistoryFile instance);
 partial void UpdateHistoryFile(HistoryFile instance);
		private void detach_HistoryFiles(HistoryFile entity)
		{
			this.SendPropertyChanging();
			entity.File = null;
		}
 partial void InsertHistoryFile(HistoryFile instance);
		private void attach_HistoryFiles(HistoryFile entity)
		{
			this.SendPropertyChanging();
			entity.File = this;
		}