if (prefix != null) { setKey(prefix); }
    public void setProperties(String prefix, Properties setList) {	setPropertyPrefix(prefix);	prefix = PropUtils.getScopedPropertyPrefix(prefix);	addZoom = LayerUtils.booleanFromProperties(setList, prefix + AddZoomProperty, addZoom);	addPan = LayerUtils.booleanFromProperties(setList, prefix + AddPanProperty, addPan);	addScale = LayerUtils.booleanFromProperties(setList, prefix + AddScaleProperty, addScale);	createFace();    }