partial void DeleteMilestoneExtension(MilestoneExtension instance);
 partial void InsertMilestoneExtension(MilestoneExtension instance);
 partial void UpdateMilestoneExtension(MilestoneExtension instance);
		private void detach_MilestoneExtension(MilestoneExtension entity)
		{
			this.SendPropertyChanging();
			entity.Milestone = null;
		}