anchor.diff:        startTime = _findStartCookie();
         if (startTime == null) {
           // fall back to now
  -        startTime = new Date.now().millisecondsSinceEpoch;
  +        startTime = new DateTime.now().millisecondsSinceEpoch;
         }
       }
       mark(START_TIME, startTime);
  
positive.code:       return;
      }
      if (markTime == null) {
        markTime = new Date.now().millisecondsSinceEpoch;
      } else if (markTime is! int) {
        try {
          // Make sure the time is a number.
  
negative.code:   */
    void measure(String episodeName,
        [startNameOrTime = null, endNameOrTime = null]) {
      int now = new DateTime.now().millisecondsSinceEpoch;
      if (_debug) {
        print('${PREFIX}:${MEASURE}:'
              '${episodeName}:${startNameOrTime}:${endNameOrTime}');
  