public ShoppingListModel(IConsumer user)
 {
     _user = user;
     ShoppingListData = new ObservableCollection<ProductInfo>();
     _user.ReadFromJsonFile();
 }
 /// <summary>
 ///     FindProductModel constructor takes a UnitOfWork and a user and reads from a file if there is a local shoppinglist
 /// </summary>
 /// <param name="user"></param>
 /// <param name="autoComplete"></param>
 public ShoppingListModel(IConsumer user, IAutocomplete autoComplete)
 {
     autocomplete = autoComplete;
     User = user;
     ShoppingListData = new ObservableCollection<ProductInfo>();
     User.ReadFromJsonFile();
 }