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kotlinlang

hello :slightly_smiling_face:. is there something similar to `@JsonAnyGetter` from jackson in kotlinx serialization? or, assuming I have a json like

```{
  field: value,
  second: value,
  another: value
}```
how can I map into something a class like

```@Serializable
class MyClass(val field: String, val additional: Map&lt;String, String&gt;)```
?

bonus question, coming from jackson, I spent most of day trying to figure out how to handle `val additional: Map&lt;String, Any&gt;`, but that is not really possible with kotlin serialization right?

sounds doable with a custom serializer, but it'll only work for json

<https://github.com/Kotlin/kotlinx.serialization/issues/292|https://github.com/Kotlin/kotlinx.serialization/issues/292>
<https://github.com/Kotlin/kotlinx.serialization/blob/master/docs/json.md#json-transformations|https://github.com/Kotlin/kotlinx.serialization/blob/master/docs/json.md#json-transformations>

I only care about json, at least for now. thanks for the heads up