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Hey, I have a question related to data classes and Jackson deserialization. Let's suppose I have a `data class` as the class to be deserialized and I need to transform a JSON value into a custom object. For instance, a `String` value from JSON gets transformed into an `enum` value in my app, or color `String` into an `Int`. In Java, what I did was doing the transformation in the setter of the field.

In Kotlin, it seems like Jackson uses the generated constructor for deserializing instead of getters and setters, so I end up having a `InvalidFormatException` because it cannot construct an instance of T type from some R type.

BTW, I'm using `KotlinModule` in my `ObjectParser`

Is there an elegant solution to this? Or this is not a good use case for data classes?

A not so elegant solution I found was defining in my constructor a `var` of my "transformed" type and then a function `set&lt;jsonFieldName&gt;` that Jackson uses because it JSON field name and constructor field name don't match

You can add secondary constructor and use @JsonCreator

Something like @JsonCreator constructor(val: Int) this(val.toString())