add: include (jslib_dirutils); this.mDirUtils = new DirUtils(); 
context: function FileUtils() {} // constructor
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/ad31f8ed11639845cff55b2a989a1a6243a89a9b/fileUtils.js/buggy/calendar/resources/content/jslib/io/fileUtils.js