Simple serialization/deserialization with renaming field in Scala

RenameSerialization.scala

import org.json4s.FieldSerializer._
import org.json4s.jackson.Serialization
import org.json4s.{DefaultFormats, FieldSerializer}

case class Data(id: Int)

implicit val format = new DefaultFormats {} + FieldSerializer[Data](
  renameTo("id", "@id"),
  renameFrom("@id","id")
)

val id = 1

val ser = Serialization.write[Data](Data(id))
val dSer = Serialization.read[Data](ser)
assert(dSer.id == id)