InputStreamReader inputStreamReader = getInputStreamReader(reader);
DataHolder dh = JTLSAVER.newDataHolder();
dh.put(RESULTCOLLECTOR_HELPER_OBJECT, resultCollectorHelper); // Allow TestResultWrapper to feed back the samples
// This is effectively the same as saver.fromXML(InputStream) except we get to provide the DataHolder
// Don't know why there is no method for this in the XStream class
JTLSAVER.unmarshal(new XppDriver().createReader(reader), null, dh);
inputStreamReader.close();
}