code: public SerializationStreamReader createStreamReader(String encoded)
        throws SerializationException {
      ClientSerializationStreamReader clientSerializationStreamReader = new ClientSerializationStreamReader(
          serializer);
      clientSerializationStreamReader.prepareToRead(getEncodedInstance(encoded));
      return clientSerializationStreamReader;
    }
docs: Returns a {@link com.google.gwt.user.client.rpc.SerializationStreamReader
  SerializationStreamReader} that is ready for reading.
  
  @param encoded string that encodes the response of an RPC request
  @return {@link com.google.gwt.user.client.rpc.SerializationStreamReader
  SerializationStreamReader} that is ready for reading
  @throws SerializationException