public void destroy() {
        if (!Settings.enableFeatureUnifiedGeoItemLayer()) {
            return;
        }
        if (stopper != null) {
            stopper.dispose();
            stopper = null;
        }
        if (testLayer != null) {
            testLayer.destroy();
            testLayer = null;
        }
    }
This is a test layer to experiment with unified geoitem layers. It is only activated with a specific developer setting
main/src/main/java/cgeo/geocaching/unifiedmap/geoitemlayer/GeoItemTestLayer.java