1<?xml version="1.0" encoding="UTF-8"?> 2<out> 3<extension-string>attr-String</extension-string> 4<extension-ctr>1</extension-ctr> 5<extension-boolean>true</extension-boolean> 6<extension-ctr>2</extension-ctr> 7<extension-double>1.1</extension-double> 8<extension-ctr>3</extension-ctr> 9<extension-node>attr-Node</extension-node> 10<extension-ctr>4</extension-ctr> 11</out> 12