<?xml version="1.0"?> <model> <name>Bookshelf</name> <version>1.0</version> <sdf version='1.2'>model-1_2.sdf</sdf> <sdf version='1.3'>model-1_3.sdf</sdf> <sdf version='1.4'>model-1_4.sdf</sdf> <sdf version='1.5'>model.sdf</sdf> <author> <name>Nate Koenig</name> <email>nate@osrfoundation.org</email> </author> <description> A wooden bookshelf. </description> </model>