private ResponseCodec<HttpResponse> getResponseCodec(Dialect dialect) {
  switch (dialect) {
    case OSS:
      return new JsonHttpResponseCodec();

    case W3C:
      return new W3CHttpResponseCodec();

    default:
      throw new IllegalStateException("Unknown dialect: " + dialect);
  }
}
 

protected void setResponseCodec(ResponseCodec<HttpResponse> codec) {
    setPrivateFieldValue("responseCodec", codec);
}