Yaml / Kaml: Having some difficulty with a sealed class that has abstract properties which are not part of the primary constructor - the property is a lateinit var, but I get a MissingPropertyException. Sample code:

sealed class Node {
  abstract var key: String
  
  data class PostNode(val title: String) : Node {
    override lateinit var key: String
  }
}

And a sample yaml file might simply be:

title: This is a post

Kaml can't deserialize this, as it says that "key" is required but missing. My understanding was that only properties in the primary constructor are required?

@Transient lateinit

should work

Yeah. Trouble is, I do want it for serialization, just not for deserialization... I'm trying to do too many things with one class, I think! So for now I've created a simpler class for my yaml, then copied its data in to my PostNode class.