partial void DeleteTutorial(Tutorial instance);
 partial void UpdateTutorial(Tutorial instance);
		private void detach_Tutorial(Tutorial entity)
		{
			this.SendPropertyChanging();
			entity.Usuario = null;
		}
 partial void InsertTutorial(Tutorial instance);
		private void attach_Tutorial(Tutorial entity)
		{
			this.SendPropertyChanging();
			entity.Usuario = this;
		}