Edit File: test3.xml
<doc> <parent> <discarded> <discarded/> </discarded> <preserved/> This text node must be discarded <discarded> <discarded/> </discarded> <preserved> content1 <child1></child1> <child2>content2</child2> <preserved>too</preserved> <child2>content3</child2> <preserved></preserved> <child2>content4</child2> <preserved/> <child2>content5</child2> content6 </preserved> This text node must be discarded <discarded> <discarded/> </discarded> This text node must be discarded <preserved></preserved> This text node must be discarded <preserved/> This text node must be discarded <discarded> <discarded/> </discarded> This text node must be discarded </parent> </doc>