The only thing I want to serialize in the above is...

# serialization

[Chris Fillmore]

The only thing I want to serialize in the above is the headers , which I can get from toMap()

[rnett]

Check out https://github.com/Kotlin/kotlinx.serialization/blob/master/docs/serializers.md#composite-serializer-via-surrogate, I'd think using Map<String, List<String>> as the surrogate would work.

[rnett]

https://github.com/Kotlin/kotlinx.serialization/issues/344 too, maybe leave a comment

[Chris Fillmore]

Thanks for responding!
I’ve moved on to another problem at the moment but when I return to this I’ll take a look