if (set.isEmpty()) {
        /*
         * The (tooLow + 1, tooHigh) arguments below would be invalid because tooLow would be
         * greater than tooHigh.
         */
        return ContiguousSet.create(Range.openClosed(0, 1), DiscreteDomain.integers()).subSet(0, 1);
      }
      int tooHigh = set.last() + 1;
      int tooLow = set.first() - 1;
      set.add(tooHigh);

    }

    private void assertHighlightedQueries(Set<String> highlightedQuerySet) {
        @SuppressWarnings("unchecked")
        Set<String> set = (Set<String>) getMockRequest().getAttribute(Constants.HIGHLIGHT_QUERIES);
        if (highlightedQuerySet != null) {
            assertEquals(highlightedQuerySet.stream().sorted().collect(Collectors.joining("\n")),
                    set.stream().sorted().collect(Collectors.joining("\n")));

  }

  private static Set<Feature<?>> computeReserializedMapFeatures(Set<Feature<?>> mapFeatures) {
    Set<Feature<?>> derivedFeatures = Helpers.copyToSet(mapFeatures);
    derivedFeatures.remove(CollectionFeature.SERIALIZABLE);
    derivedFeatures.remove(CollectionFeature.SERIALIZABLE_INCLUDING_VIEWS);
    return derivedFeatures;
  }

      Set<Feature<?>> multimapFeatures) {
    Set<Feature<?>> derivedFeatures = Helpers.copyToSet(multimapFeatures);
    derivedFeatures.remove(CollectionFeature.SERIALIZABLE);
    derivedFeatures.remove(CollectionFeature.SERIALIZABLE_INCLUDING_VIEWS);
    return derivedFeatures;
  }

  private static Set<Feature<?>> computeAsMapFeatures(Set<Feature<?>> multimapFeatures) {

   *     operation
   */
  void clear();

  /**
   * Adds all of the ranges from the specified range set to this range set (optional operation).
   * After this operation, this range set is the minimal range set that {@linkplain
   * #enclosesAll(RangeSet) encloses} both the original range set and {@code other}.
   *
   * <p>This is equivalent to calling {@link #add} on each of the ranges in {@code other} in turn.
   *

            defaultRoleList.add(name);
        }));
    }

    public Set<String> build(final SearchRequestType searchRequestType) {
        final Set<String> roleSet = new HashSet<>();
        final HttpServletRequest request = LaRequestUtil.getOptionalRequest().orElse(null);
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

    return inverse;
  }

  @LazyInit @CheckForNull private transient Set<K> keySet;

  @Override
  public Set<K> keySet() {
    Set<K> result = keySet;
    return (result == null) ? keySet = new KeySet() : result;
  }

  @WeakOuter
  private class KeySet extends ForwardingSet<K> {
    @Override
    protected Set<K> delegate() {
      return delegate.keySet();
    }

    @Override

      }
    }
    return features;
  }

  /**
   * Given a set of features, return a new set of all features directly or indirectly implied by any
   * of them.
   *
   * @param features the set of features whose implications to find
   * @return the implied set of features
   */
  public static Set<Feature<?>> impliedFeatures(Set<Feature<?>> features) {
    Set<Feature<?>> impliedSet = new LinkedHashSet<>();

    }

    @Override
    public Provider<Set<FileSystemLocation>> getElements() {
        return new BuildableBackedProvider<>(
            this,
            Cast.uncheckedCast(Set.class),
            new FileCollectionElementsFactory(this)
        );
    }

    private static class FileCollectionElementsFactory implements Factory<Set<FileSystemLocation>> {

            format("key %s value set to %s, must be integer", key, value), e);
      }
    }
  }

  /** Parse initialCapacity */
  static class InitialCapacityParser extends IntegerParser {
    @Override
    protected void parseInteger(CacheBuilderSpec spec, int value) {
      checkArgument(
          spec.initialCapacity == null,
          "initial capacity was already set to %s",
          spec.initialCapacity);