request1.setBaseUri(new File(queryFile).toURI());
Object result1 = engine.execute(request1);
RemoteSequence remoteSequence = (RemoteSequence) result1;
StringWriter res_sw = new StringWriter();
Serializer ser = new SAXSerializer(new SAXWriter(res_sw), res_sw);
ser.emit(remoteSequence);
String swresult = sw.toString();
long used = SystemUtils.getHeapUsedMemory();
stdbuf.append(", used(before GC): " + StringUtils.displayBytesSize(used));
System.gc();