partial void DeleteMilestone(Milestone instance);
 partial void UpdateMilestone(Milestone instance);
		private void detach_Milestones(Milestone entity)
		{
			this.SendPropertyChanging();
			entity.Project = null;
		}
 partial void InsertMilestone(Milestone instance);
		private void attach_Milestones(Milestone entity)
		{
			this.SendPropertyChanging();
			entity.Project = this;
		}