anchor.diff:  final _JS_LIBRARY_PREFIX = "js_library";
   final _UNDEFINED_VAR = "_UNDEFINED_JS_CONST";
   
  -String _accessJsPath(String path) {
  -  var parts = path.split(".");
  +String _accessJsPath(String path) => _accessJsPathHelper(path.split("."));
  +
  +String _accessJsPathHelper(Iterable<String> parts) {
     var sb = new StringBuffer();
     sb
       ..write('${_JS_LIBRARY_PREFIX}.JsNative.getProperty(' * parts.length)
  
positive.code:   return sb.toString();
  }
  
  
  String _accessJsPathSetter(String path) {
    var parts = path.split(".");
    return "${_JS_LIBRARY_PREFIX}.JsNative.setProperty(${_accessJsPath(parts.getRange(0, parts.length - 1).join('.'))
        }, '{parts.end}', v)";
  }
  
  @Deprecated("Internal Use Only")
  
negative.code:   sb.write("\n");
  }
  
  bool _isExternal(mirrors.MethodMirror mirror) {
    // This try-catch block is a workaround for BUG:24834.
    try {
      return mirror.isExternal;
    } catch (e) { }
    return false;
  }
  
  List<String> _generateExternalMethods() {
  