How to map a property on to a collection of many?

[AbstractEmptyIdea]

Hello,

I am experimenting with Mapperly I'm extremely new to the library, but it seems really easy to get going, but I've hit a snag, I would like to be able to map Import.Creator into all children of Destination.Items.Creator, now I have been able to achieve this by using the code DeviceMapperly.MapImport, but it feels like this should be possible by using something like [MapProperty("Creator","Items.Creator")] but everything I've tried is currently failing me, Am I missing something here?

Bellow you will find the example code I've been playing with

 [Mapper]
 public static partial class DeviceMapperly
 {
     public static Destination MapImport(Import request)
     {
         var destination = ImportToDestination(request);
         foreach (var destinationItem in destination.Items)
             destinationItem.Creator = request.Creator;
      
         return destination;
     }
 
     public static partial Destination ImportToDestination(Import request);
 }

 public class Import
 {
     public string Creator { get; set; }
     public ICollection<ImportItem> Items;
 }
 
 public class ImportItem
 {
     public string Name { get; set; }
     public string Description { get; set; }
 }
 
 public class Destination
 {
     public ICollection<DestinationItem> Items;
 }
 
 public class DestinationItem
 {
     public string Creator { get; set; }
     public string Name { get; set; }
     public string Description { get; set; }
     public DateTimeOffset CreatedOn { get; set; }
 }

[latonz]

Mapperly does not support unflattening into enumerable items. You need to do this manually as you have done it.