code: public KryoInstantiator setInstantiatorStrategy(final InstantiatorStrategy inst) {
      return new KryoInstantiator() {
        public Kryo newKryo() {
          Kryo k = KryoInstantiator.this.newKryo();
          k.setInstantiatorStrategy(inst);
          return k;
        }
      };
    }
docs: If true, Kryo will error if it sees a class that has not been registered