public void Insert() 
		{
			ISession session = factory.OpenSession();
			
			Parent dad = new Parent();
			dad.Name = "the dad";
			
			Child boy = new Child();
			boy.Name = "the boy";
			boy.SingleParent = dad;

			Child girl = new Child();
			girl.Name = "the girl";
			girl.SingleParent = dad;

			dad.AddChild(boy);
			dad.AddChild(girl);

			session.SaveOrUpdate(dad);

			dad.Aliases.Add("a1", new Alias("Daddy", "u") );
			dad.Aliases.Add("a2", new Alias("Father", "f") );
			
			session.Flush();
			session.Close();

			int boyId = boy.Id;
			int girlId = girl.Id;
			int dadId = dad.Id;

			session = factory.OpenSession();

			dad = (Parent) session.Load( typeof(Parent), dadId );

			foreach (Child child in dad.Children) 
			{
				if (child.Name=="the girl") 
				{
					Assert.AreEqual(girlId, child.Id);
				}
				else 
				{
					Assert.AreEqual(boyId, child.Id);
				}
			}

		}
		public void AddChild(Child child) 
		{
			Children.Add( child );
			child.SingleParent = this;
		}