anchor.diff:        superClass._addToChildren(this);
       }
       error = map['error'];
  -    
  +
       var allocationStats = map['allocationStats'];
       if (allocationStats != null) {
         newSpace.update(allocationStats['new']);
  
positive.code:     }
      children.add(cls);
    }
    
    Future<ServiceObject> get(String command) {
      return isolate.get(id + "/$command");
    }
  
negative.code: 
    void _processHits(List scriptHits) {
      // Update hits table.
      for (var i = 0; i < scriptHits.length; i += 2) {
        var line = scriptHits[i];
        var hit = scriptHits[i + 1]; // hit status.
        assert(line >= 1); // Lines start at 1.
        var oldHits = _hits[line];
        if (oldHits != null) {
          hit += oldHits;
        }
        _hits[line] = hit;
      }
      _applyHitsToLines();
  