code: public static Object getSerializedObjectFromString(Object asyncService, String serializedData)
      throws SerializationException {
  
          SerializationStreamFactory ssf = (SerializationStreamFactory)asyncService;
          return ssf.createStreamReader(serializedData).readObject();
      }
docs: Deserializes the prefetched RPC data.<p>
  
  @param asyncService the RPC service instance
  @param serializedData the serialized object data
  
  @return the prefetched RPC data
  
  @throws SerializationException if the deserialization fails