anchor.diff:    }
   
     void _fetchNextChunk() {
  -    fetchBody('../data/stock_data_${_currentChunk++}.json').then((Response response) {
  +    fetchBody(_urlToFetch(_currentChunk++)).then((Response response) {
         String json = response.bodyAsString();
         JsonDecoder decoder = new JsonDecoder();
   
  
positive.code: typedef void StockDataCallback(StockData data);
  const _kChunkCount = 30;
  
  class StockDataFetcher {
    int _currentChunk = 0;
    final StockDataCallback callback;
  
negative.code: import 'dart:math';
  
  import 'package:sky/mojo/net/fetch.dart';
  import 'package:sky/mojo/asset_bundle.dart';
  
  // Snapshot from http://www.nasdaq.com/screening/company-list.aspx
  // Fetched 2/23/2014.
  