public void setDuration(final LocalTime DURATION) {
        if (null == duration) {
            _duration = DURATION;
            fireTileEvent(REDRAW_EVENT);
        } else {
            if (!duration.isBound()) {
                duration.set(DURATION);
            }
        }
    }
Defines a duration that is used in the TimeTileSkin
@param DURATION
src/main/java/eu/hansolo/tilesfx/Tile.java