*
   * <p><b>{@code Stream} equivalent:</b> {@link java.util.stream.Stream#filter Stream.filter}.
   */
  // TODO(kevinb): how can we omit that Iterables link when building gwt
  // javadoc?
  public static <E extends @Nullable Object> Collection<E> filter(
      Collection<E> unfiltered, Predicate<? super E> predicate) {
    if (unfiltered instanceof FilteredCollection) {

    public OrArtifactFilter() {
        this.filters = new LinkedHashSet<>();
    }

    public OrArtifactFilter(Collection<ArtifactFilter> filters) {
        this.filters = new LinkedHashSet<>(filters);
    }

    public boolean include(Artifact artifact) {
        for (ArtifactFilter filter : filters) {
            if (filter.include(artifact)) {
                return true;
            }
        }

     * @param filters The filters to combine, may be {@code null}.
     */
    public CumulativeScopeArtifactFilter(CumulativeScopeArtifactFilter... filters) {
        this.scopes = new HashSet<>();

        if (filters != null) {
            for (CumulativeScopeArtifactFilter filter : filters) {
                addScopes(filter.getScopes());
            }
        }
    }

    private void addScopes(Collection<String> scopes) {

                    Map<String, String> map = Maps.newHashMap();
                    putEntries(map, entries);
                    map.putAll(ENTRIES_TO_FILTER);
                    map = Maps.filterEntries(map, FILTER_ENTRIES_1);
                    return Maps.filterEntries(map, FILTER_ENTRIES_2);
                  }
                })
            .named("Maps.filterEntries[Maps.filterEntries[Map, Predicate], Predicate]")

  static final int MAX_SIZE = 1023;
  private final char[] table;
  private final boolean containsZero;
  private final long filter;

  private SmallCharMatcher(char[] table, long filter, boolean containsZero, String description) {
    super(description);
    this.table = table;
    this.filter = filter;
    this.containsZero = containsZero;
  }

  private static final int C1 = 0xcc9e2d51;

   * <i>not</i> needed, it may be faster to copy {@code Iterables.filter(unfiltered, predicate)} and
   * use the copy.
   *
   * <p><b>Warning:</b> {@code predicate} must be <i>consistent with equals</i>, as documented at
   * {@link Predicate#apply}. Do not provide a predicate such as {@code
   * Predicates.instanceOf(ArrayList.class)}, which is inconsistent with equals. (See {@link

        ScopeArtifactFilter filter;
        if (Artifact.SCOPE_PROVIDED.equals(expectedScope)) {
            filter = new ScopeArtifactFilter(Artifact.SCOPE_COMPILE);
        } else if (Artifact.SCOPE_SYSTEM.equals(expectedScope)) {
            filter = new ScopeArtifactFilter(Artifact.SCOPE_COMPILE);
        } else {
            filter = new ScopeArtifactFilter(expectedScope);
        }

                final EsUrlFilterService urlFilterService = ComponentUtil.getComponent(EsUrlFilterService.class);
                try {
                    urlFilterService.delete(sid);
                } catch (final Exception e) {
                    logger.warn("Failed to delete url filters for {}", sid);
                }
            }

    }

    private static List<JApiCmpWorkerAction.Archive> toArchives(FileCollection fc) {
        Set<File> files = fc.getFiles();
        List<JApiCmpWorkerAction.Archive> archives = new ArrayList<>(files.size());
        for (File file : files) {
            archives.add(new JApiCmpWorkerAction.Archive(file, "1.0"));
        }
        return archives;
    }

    }

    public void addBoostFunction(final QueryBuilder filter, final ScoreFunctionBuilder<?> scoreFunction) {
        boostFunctionList.add(new FilterFunctionBuilder(filter, scoreFunction));
    }

    public RescorerBuilder<?>[] getRescorers(final Map<String, Object> params) {
        return queryRescorerList.stream().map(r -> r.evaluate(params)).filter(b -> b != null).toArray(n -> new RescorerBuilder<?>[n]);
    }