code: @Deprecated
      public List<String> getFavorites() {
          removeFavoritesWhichDoNotExist();
          return ImmutableList.copyOf(Maps.filterEntries(data, new Predicate<Entry<String, Boolean>>() {
              @Override
              public boolean apply(@Nullable Entry<String, Boolean> input) {
                  return input != null && input.getValue();
              }
          }).keySet());
      }
docs: Use {#getAllFavorites()}
  @return favorites