public boolean addAll(Collection<? extends V> collection) {
      checkNotNull(collection);
      throw new IllegalArgumentException("Key does not satisfy predicate: " + key);
    }

    @Override
    protected Set<V> delegate() {
      return emptySet();
    }
  }

  private static final class AddRejectingList<
          K extends @Nullable Object, V extends @Nullable Object>
      extends ForwardingList<V> {

    private String indexName = null;

    @Override
    protected String asEsIndex() {
        if (indexName == null) {
            final String name = ComponentUtil.getFessConfig().getIndexLogIndex();
            indexName = super.asEsIndex().replaceFirst(Pattern.quote("fess_log"), name);
        }
        return indexName;
    }

    @Override
    protected LocalDateTime toLocalDateTime(final Object value) {

    @Resource
    protected WebConfigService webConfigService;

    // ===================================================================================
    //                                                                               Hook
    //                                                                              ======
    @Override
    protected void setupHtmlData(final ActionRuntime runtime) {

    /** Character used to separate cache key components */
    protected static final char CACHE_KEY_SPLITTER = '\n';

    /** Cache for storing popular word lists */
    protected Cache<String, List<String>> cache;

    /** Fess configuration instance */
    protected FessConfig fessConfig;

    /**
     * Default constructor.
     */
    public PopularWordHelper() {

        protected int size = Constants.DEFAULT_PAGE_SIZE;
        /** Geographic search information */
        protected GeoInfo geoInfo;
        /** Facet configuration for aggregations */
        protected FacetInfo facetInfo;
        /** Highlighting configuration */
        protected HighlightInfo highlightInfo;
        /** Hash of document for similarity search */
        protected String similarDocHash;

    table.put("a", 1, 'a');
    return table;
  }

  @Override
  protected Map<String, Map<Integer, Character>> makePopulatedMap() {
    TreeBasedTable<String, Integer, Character> table = makeTable();
    populateTable(table);
    return table.rowMap().tailMap("b");
  }

  @Override
  protected Map<String, Map<Integer, Character>> makeEmptyMap() {
    return makeTable().rowMap().tailMap("b");
  }

    // Basic escaping of unsafe chars (wrap them in {,}'s)
    CharEscaper wrappingEscaper =
        new ArrayBasedCharEscaper(NO_REPLACEMENTS, 'A', 'Z') {
          @Override
          protected char[] escapeUnsafe(char c) {
            return ("{" + c + "}").toCharArray();
          }
        };
    EscaperAsserts.assertBasic(wrappingEscaper);
    // '[' and '@' lie either side of [A-Z].

        @DisplayName("Should handle reflection access to protected method")
        void testProtectedMethodAccess() throws Exception {
            // Given
            Handler testHandler = new Handler(null);

            // When
            Method method = Handler.class.getDeclaredMethod("getDefaultPort");

            // Then
            assertTrue(Modifier.isProtected(method.getModifiers()));

     */
    public BoostDocumentRuleService() {
        super();
    }

    /** Database behavior for boost document rule operations. */
    @Resource
    protected BoostDocumentRuleBhv boostDocumentRuleBhv;

    /** Fess configuration. */
    @Resource
    protected FessConfig fessConfig;

    /**
     * Gets a paginated list of boost document rules.

    /**
     * Default constructor.
     */
    public PathMappingService() {
        super();
    }

    /** Path mapping behavior. */
    @Resource
    protected PathMappingBhv pathMappingBhv;

    /** Fess configuration. */
    @Resource
    protected FessConfig fessConfig;

    /**
     * Gets the path mapping list with paging.
     *
     * @param pathMappingPager the path mapping pager