anchor.diff:     * Set the values of the cross-context options to match those in the given set
      * of [options].
      */
  +  @deprecated
     void setCrossContextOptionsFrom(AnalysisOptions options);
   
     /**
  
positive.code:    */
    @deprecated
    bool get enableConditionalDirectives;
  
    /**
     * Return a list of the names of the packages for which, if they define a
  
negative.code:   bool dart2jsHint = false;
  
    @override
    List<String> enabledExperiments = const <String>[];
  
    @override
    List<String> enabledPluginNames = const <String>[];
  
    @override
  