@Override
    public void read(JmeImporter im) throws IOException {
        super.read(im);
        InputCapsule capsule = im.getCapsule(this);
        plane = (Plane) capsule.readSavable("collisionPlane", new Plane());
        createShape();
    }
Creates a plane Collision shape
@param plane the plane that defines the shape
jme3-jbullet/src/main/java/com/jme3/bullet/collision/shapes/PlaneCollisionShape.java