@Override
    public void read(JmeImporter im) throws IOException {
        super.read(im);
        InputCapsule ic = im.getCapsule(this);
        enabled = ic.readBoolean("enabled", true);
        spatial = (Spatial) ic.readSavable("spatial", null);
    }
Creates a new PhysicsNode with the supplied collision shape
@param shape the desired collision shape
jme3-examples/src/main/java/jme3test/bullet/PhysicsHoverControl.java