docs: function searchBar_restoreDefaults()
    {
      // XXX: Bug 556477 - Restore default sorting
      this.openEngineManager(function(controller) {
        var manager = new engineManager(controller);
  
        // We have to do any action so the restore button gets enabled
        manager.moveDownEngine(manager.engines[0].name);
        manager.restoreDefaults();
        manager.close(true);
      });
  
      // Update the visibility status for each engine and reset the default engine
      this._bss.restoreDefaultEngines();
      this._bss.currentEngine = this._bss.defaultEngine;
  
      // Clear any entered search term
      this.clear();
    }