rb.setPredeterminedId(md5Hash);
rb.requestObject(url, new ETRCallback(callback));
} else {
RequestBuilder rb = new RequestBuilder(RequestBuilder.GET, url);
try {
rb.sendRequest("", new ETRCallback(callback));
} catch (RequestException e) {
throw new ResourceException(this,
"Unable to initiate request for external resource", e);
}
}