public BooleanProperty sectionsAlwaysVisibleProperty() {
        if (null == sectionsAlwaysVisible) {
            sectionsAlwaysVisible = new BooleanPropertyBase(_sectionsAlwaysVisible) {
                @Override protected void invalidated() { fireTileEvent(REDRAW_EVENT); }
                @Override public Object getBean() { return Tile.this; }
                @Override public String getName() { return "sectionsAlwaysVisible"; }
            };
        }
        return sectionsAlwaysVisible;
    }
Defines if the sections will always be visible.
This is currently only used in the IndicatorSkin
@param VISIBLE
src/main/java/eu/hansolo/tilesfx/Tile.java