package com.example.puzzles.types.union

sealed interface Creature

object Dragon : Creature
object Unicorn : Creature
object Yeti : Creature

fun main() {
  val mysteryFootprints: Yeti? = null

  when (mysteryFootprints) {
    is Dragon? -> println("Looks like the claw-marks of a huge dragon.")
    is Unicorn? -> println("I see the hoof-prints of a magical unicorn.")
    is Yeti? -> println("These huge footprints prove the yeti is real!")
    null -> println("There aren't any footprints.")
  }
}