The plugin writes an encoded CodeGeneratorResponse to stdout.
final case classVersion(major: scala.Option[Int] = scala.None, minor: scala.Option[Int] = scala.None, patch: scala.Option[Int] = scala.None, suffix: scala.Option[String] = scala.None) extends scalapb.GeneratedMessage with scalapb.Message[Version] with Updatable[Version] with Product with Serializable