json4s_ahhhh.scala

import org.json4s._
import org.json4s.jackson.Serialization

case class Person(name: String)
case class Alias(name: String)
case class PersonWithAliases(p: Person, aliases: List[Alias])

implicit val formats = Serialization.formats(NoTypeHints) 

val personWithAliases = PersonWithAliases(Person("Jacques"), List(Alias("Jack"), Alias("Jacky")))

val jsontext = Serialization.write(personWithAliases);
val parsed = Serialization.read[PersonWithAliases](jsontext);