public void setTimePeriod(final java.time.Duration PERIOD) {
        if (null == timePeriod) {
            _timePeriod = PERIOD;
            if (PERIOD.getSeconds() > getMaxTimePeriod().getSeconds()) {
                setMaxTimePeriod(PERIOD);
            }
            fireTileEvent(TIME_PERIOD_EVENT);
        } else {
            if (!timePeriod.isBound()) {
                timePeriod.set(PERIOD);
            }
        }
    }
Defines the duration that should be used for the data shown in the TimelineTileSkin
@param PERIOD
src/main/java/eu/hansolo/tilesfx/Tile.java