code: private static function init() : void
      {
          static $inited = false;
          if (!$inited) {
              if (!isset($_SESSION['Booby']) || !$_SESSION['Booby']) {
                  $_SESSION['Booby'] = [];
              }
              self::$store =& $_SESSION['Booby'];
              $inited = true;
          }
      }
docs: Helper to check if we were initialized.
  
  @return void