<?xml version="1.0" ?> <model> <name>Follower Vehicle</name> <version>1.0</version> <sdf version="1.6">model.sdf</sdf> <author> <name>Ian Chen</name> <email>ichen@osrfoundation.org</email> </author> <description> A differential drive vehicle equipped with the FollowerPlugin that follows the closest object detected by its depth camera sensor. </description> </model>