@Override
    public void write(JmeExporter e) throws IOException {
        super.write(e);
        OutputCapsule capsule = e.getCapsule(this);
        capsule.write(getPhysicsLocation(new Vector3f()), "physicsLocation", new Vector3f());
        capsule.write(getPhysicsRotationMatrix(new Matrix3f()), "physicsRotation", new Matrix3f());
        capsule.write(getCcdMotionThreshold(), "ccdMotionThreshold", 0);
        capsule.write(getCcdSweptSphereRadius(), "ccdSweptSphereRadius", 0);
    }
@param index The index of the overlapping Node to retrieve.
@return The Overlapping CollisionObject at the given index.
jme3-jbullet/src/main/java/com/jme3/bullet/objects/PhysicsGhostObject.java