rem: if(!aPath) { 
add: if (!aPath) { 
context: exists : function (aPath) {  if(!aPath) {    jslibError(null, "(no path defined)", "NS_ERROR_INVALID_ARG", JS_FILEUTILS_FILE+":exists");    return null;  }  var rv;  try {     var file                = new JS_FILEUTILS_FilePath(aPath);    rv=file.exists();  } catch(e) {     jslibError(e, "(problem getting file instance)", "NS_ERROR_UNEXPECTED", JS_FILEUTILS_FILE+":exists");    rv=null;  }  return rv;},
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/ad31f8ed11639845cff55b2a989a1a6243a89a9b/fileUtils.js/clean/calendar/resources/content/jslib/io/fileUtils.js