anchor.diff:          maskedByte = (byte & 0x7f);
           shiftedByte = (maskedByte << currentShift);
           result += shiftedByte;
  -        currentShift += 7; 
  +        currentShift += 7;
         }
   
         stream.offset = offset;
  -      return result;  
  +      return result;
       }
   
       DeltaDataStream stream = new DeltaDataStream(deltaData, 0);
  
positive.code:     return object;
    }
  
    PackObject _matchObjectAtOffset(int startOffset) {
      _offset = startOffset;
      return _matchObjectData(_getObjectHeader());
    }
  
    // TODO(grv) : add progress.
    Future parseAll() {
      Completer completer = new Completer();
  
      try {
  
negative.code:     throw "to be implemented";
    }
  
  }