1 Classes that differ from the jbullet implementation:
2 - com.jme3.bullet.PhysicsSpace
3 - com.jme3.bullet.collision.PhysicsCollisionObject
4 - All classes in com.jme3.bullet.objects
5 - All classes in com.jme3.bullet.joints
6 - All classes in com.jme3.bullet.collision.shapes