context:   isCommandEnabled: function (aCommand)  {    // warning: this is not the function called in BookmarksController.onCommandUpdate    var selection = BookmarksMenu._selection;    var target    = BookmarksMenu._target;    if (selection)      return BookmarksController.isCommandEnabled(aCommand, selection, target);    return false;  },
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/fe1be84a39a9ba7c17b14ef3f9addbcc6d52bd1d/bookmarksMenu.js/buggy/browser/components/bookmarks/content/bookmarksMenu.js