anchor.diff:    void _clearCaches() {
       _scriptCache.clear();
       _lastEvent = null;
  -    _reportedException = null;
       _breakPositionsMap.clear();
       _stdio.value = [];
       _uriToScriptMap.clear();
  
positive.code:     switch (event.kind) {
        case EventKind.kResume:
          await _pause(false);
          _reportedException = null;
          break;
        case EventKind.kPauseStart:
        case EventKind.kPauseExit:
  
negative.code:       case EventKind.kPauseInterrupted:
        case EventKind.kPauseException:
        case EventKind.kPausePostRequest:
          await _pause(true, pauseEvent: event);
          break;
        // TODO(djshuckerow): switch the _breakpoints notifier to a 'ListNotifier'
        // that knows how to notify when performing a list edit operation.
  