Properties props = new Properties();
//props.setProperty(OutputKeys.METHOD, "text");
props.setProperty(SaxonOutputKeys.WRAP, "no");
props.setProperty(OutputKeys.INDENT, "no");
props.setProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
exp.run(dynamicContext, new StreamResult(res_sw), props);
String swresult = sw.toString();
long used = SystemUtils.getHeapUsedMemory();
stdbuf.append(", used(before GC): " + StringUtils.displayBytesSize(used));
System.gc();
used = SystemUtils.getHeapUsedMemory();