@Override
                  protected SortedMap<String, String> create(Entry<String, String>[] entries) {
                    SortedMap<String, String> map = new NonNavigableSortedMap();
                    putEntries(map, entries);
                    map.putAll(ENTRIES_TO_FILTER);
                    return Maps.filterKeys(map, FILTER_KEYS);
                  }
                })

                  @Override
                  protected SortedMap<String, String> create(Entry<String, String>[] entries) {
                    SortedMap<String, String> map = new NonNavigableSortedMap();
                    putEntries(map, entries);
                    map.putAll(ENTRIES_TO_FILTER);
                    return Maps.filterKeys(map, FILTER_KEYS);
                  }
                })