public void addSection(final Section SECTION) {
        if (null == SECTION) return;
        getSections().add(SECTION);
        getSections().sort(new SectionComparator());
        fireTileEvent(SECTION_EVENT);
    }
Adds the given Section to the list of sections.
Sections in the Medusa library
usually are less eye-catching than Areas.

@param SECTION
src/main/java/eu/hansolo/tilesfx/Tile.java