partial void DeleteRevenue(Revenue instance);
 partial void UpdateRevenue(Revenue instance);
 partial void InsertRevenue(Revenue instance);
		private void detach_Revenues(Revenue entity)
		{
			this.SendPropertyChanging();
			entity.RevenueCategory = null;
		}
		private void detach_Revenues(Revenue entity)
		{
			this.SendPropertyChanging();
			entity.Hotel = null;
		}
		private void attach_Revenues(Revenue entity)
		{
			this.SendPropertyChanging();
			entity.Hotel = this;
		}