public void removePoiLocation(final Location LOCATION) {
        if (null == LOCATION) return;
        if (getPoiList().contains(LOCATION)) { getPoiList().remove(LOCATION); }
    }
Defines an optional node that can be used in combination with the
CustomTileSkin.
@param GRAPHIC
src/main/java/eu/hansolo/tilesfx/Tile.java