Kotlin Extension Functions https://kotlinlang.org/docs/reference/extensions.html https://kotlinlang.org/docs/reference/extensions.html I personally love it fo

Kotlin Extension Functions https://kotlinlang.org/docs/reference/extensions.html https://kotlinlang.org/docs/reference/extensions.html I personally love it for when I have different data classes for different layers of the application (REST objects vs. controller level objects vs. Database objects) and need to convert between them. I simply just add an extension to one layer's data object to convert it to the other layer's type