partial void UpdateFactura(Factura instance);
 partial void DeleteFactura(Factura instance);
 partial void InsertFactura(Factura instance);
		private void detach_Factura(Factura entity)
		{
			this.SendPropertyChanging();
			entity.Usuario = null;
		}
		private void attach_Factura(Factura entity)
		{
			this.SendPropertyChanging();
			entity.Usuario = this;
		}
		private void detach_Factura(Factura entity)
		{
			this.SendPropertyChanging();
			entity.Habitacion = null;
		}
		private void attach_Factura(Factura entity)
		{
			this.SendPropertyChanging();
			entity.Habitacion = this;
		}