cell.getCellCache().getSession().getSessionManager();
CollisionSystem collisionSystem =
ClientContextJME.getCollisionSystem(manager, "Default");
// Create a new collision controller, and set on the avatar
CollisionController controller = new CollisionController(collisionGraph,
(JMECollisionSystem) collisionSystem);
collisionChangeRequestListener.setCollisionController(controller);
AvatarController ac = (AvatarController)avatar.getContext().getController();
ac.setCollisionController(controller);
if (collisionListener==null) {