| 123456789101112131415161718192021222324252627 | using InABox.Core;namespace Comal.Classes{    public class InvoiceLookups : EntityLookup<Invoice>    {        public override Columns<Invoice> DefineColumns()        {            return new Columns<Invoice>(                x => x.ID,                x => x.Number,                x => x.CustomerLink.Name,                x => x.Balance            );        }        public override Filter<Invoice> DefineFilter()        {            return null;        }        public override SortOrder<Invoice> DefineSortOrder()        {            return new SortOrder<Invoice>(x => x.Number);        }    }}
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