| 123456789101112131415161718192021 | using InABox.Core;namespace Comal.Classes{    public class PurchaseOrderItemForm : EntityForm<PurchaseOrderItem, PurchaseOrderItemLink, PurchaseOrderItemForm>, IDigitalForm<PurchaseOrderItem>    {        public override string AutoIncrementPrefix() => "PF";    }    public class PurchaseOrderItemFormLookups : ILookupDefinition<DigitalForm, PurchaseOrderItemForm>    {        public Filter<DigitalForm> DefineFilter(PurchaseOrderItemForm[] items)        {            return new Filter<DigitalForm>(x => x.Active).IsEqualTo(true)                .And(x => x.AppliesTo).IsEqualTo("PurchaseOrderItem");        }        Columns<PurchaseOrderItemForm> ILookupDefinition<DigitalForm, PurchaseOrderItemForm>.DefineFilterColumns()            => new Columns<PurchaseOrderItemForm>();    }}
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