public function __construct()
 {
     // Set up the namespace for our class.
     $this->css_class = strtolower(__CLASS__);
     // Start our icon class.
     $svg = new CSST_Nav_SVG();
     // Grab a triangle for our submenu toggles.
     $icon = $svg->get();
     $this->icon = $icon;
 }
 /**
  * Output our icon.
  * 
  * @return mixed False if we have already defined the icon, else void.
  */
 public function the_icon_definition()
 {
     // Have we already defined our icon?  If so, bail.
     if (self::$got_svg) {
         return FALSE;
     }
     // Set the flag to true so we don't output this twice.
     self::$got_svg = TRUE;
     // Grab the icon definition.
     $out = $this->get_icon_definition();
     // Output the icon definition.
     echo $out;
 }