anchor.diff:  import 'package:redstone_mapper/mapper_factory.dart';
   import 'dart:convert';
   import 'package:di/di.dart';
  +import 'package:fridge_watcher/app_config.dart';
   
   @Injectable()
   class FridgeService {
  +  AppConfig appConfig;
  +
  +  FridgeService(this.appConfig);
  +
     http.Client client = new BrowserClient();
     Future<Iterable<FridgeItem>> getItems() async {
       bootstrapMapper();
   
       http.Response response =
  -        await client.get('http://localhost:8082/api/items');
  +        await client.get('${appConfig.apiBaseUrl}/items');
   
       var decodedItems = JSON.decode(response.body);
       return decodedItems.map((Map m) => decode(m, FridgeItem));
  
positive.code:     bootstrapMapper();
  
      http.Response response =
          await client.delete('http://localhost:8082/api/items/$id');
  
      if (response.statusCode != 200) {
        throw new Exception("Couldn't delete item with id : $id");
  
negative.code:     var bob = encodeJson(fridgeItem);
  
      http.Response response = await client.post(
          '${appConfig.apiBaseUrl}/items',
          headers: {'Content-type': 'application/json'}, body: bob);
  
      if (response.statusCode != 200) {
  