title: How to register many classes for Kryo Serializer? (e.g. all classes in a package)
body: <p>Registering all classes for efficient Kryo Serialization takes a lot of time. So I'm trying to make a Kryo Registrator that takes package as parameter (in Java or Scala). I'm wondering what is the easiest way to do so? (Of course, with reflection, but better with existing libraries)
  Thanks a lot for your help.</p>