1<doc> 2 <parent> 3 <discarded> 4 <discarded/> 5 </discarded> 6 <preserved/> 7 This text node must be discarded 8 <discarded> 9 <discarded/> 10 </discarded> 11 <preserved> 12 content1 13 <child1></child1> 14 <child2>content2</child2> 15 <preserved>too</preserved> 16 <child2>content3</child2> 17 <preserved></preserved> 18 <child2>content4</child2> 19 <preserved/> 20 <child2>content5</child2> 21 content6 22 </preserved> 23 This text node must be discarded 24 <discarded> 25 <discarded/> 26 </discarded> 27 This text node must be discarded 28 <preserved></preserved> 29 This text node must be discarded 30 <preserved/> 31 This text node must be discarded 32 <discarded> 33 <discarded/> 34 </discarded> 35 This text node must be discarded 36 </parent> 37</doc> 38 39 40