code: private static Map mapifySerializations(List sers) {
          Map rtn = new HashMap();
          if (sers != null) {
              int size = sers.size();
              for (int i = 0; i < size; i++) {
                  if (sers.get(i) instanceof Map) {
                      rtn.putAll((Map) sers.get(i));
                  } else {
                      rtn.put(sers.get(i), null);
                  }
              }
  
          }
          return rtn;
      }
docs: add custom KRYO serialization