anchor.diff:  import 'package:flutter_cache_manager/src/storage/cache_info_repository.dart';
   import 'package:flutter_cache_manager/src/storage/cache_object.dart';
   import 'package:sqflite/sqflite.dart';
  +
  +import 'cache_object.dart';
   
   const _tableCacheObject = 'cacheObject';
   
  
positive.code: 
    @override
    Future open() async {
      db = await openDatabase(path, version: 1,
          onCreate: (Database db, int version) async {
        await db.execute('''
        create table $_tableCacheObject ( 
          ${CacheObject.columnId} integer primary key, 
          ${CacheObject.columnUrl} text, 
          ${CacheObject.columnPath} text,
          ${CacheObject.columnETag} text,
          ${CacheObject.columnValidTill} integer,
          ${CacheObject.columnTouched} integer
          )
        ''');
      });
    }
  
  
negative.code:   }
  
    @override
    Future<CacheObject> get(String key) async {
      List<Map> maps = await db.query(_tableCacheObject,
          columns: null, where: '${CacheObject.columnKey} = ?', whereArgs: [key]);
      if (maps.isNotEmpty) {
        return CacheObject.fromMap(maps.first.cast<String, dynamic>());
      }
  