stream(baseTags).of(stream -> stream.forEach(tag -> popularWordsRequestBuilder.addTag(tag)));
                stream(baseRoles).of(stream -> stream.forEach(role -> popularWordsRequestBuilder.addRole(role)));
                stream(baseFields).of(stream -> stream.forEach(field -> popularWordsRequestBuilder.addField(field)));
                stream(baseExcludes).of(stream -> stream.forEach(exclude -> popularWordsRequestBuilder.addExcludeWord(exclude)));

     */
    public static void forEach(final JarFile jarFile, final ClassHandler handler) {
        assertArgumentNotNull("jarFile", jarFile);
        assertArgumentNotNull("handler", handler);

        if (jarFile.getName().toLowerCase().endsWith(WAR_FILE_EXTENSION)) {
            forEach(jarFile, WEB_INF_CLASSES_PATH, handler);
        } else {
            forEach(jarFile, "", handler);
        }
    }

     * @param handler
     *            リソースを処理するハンドラ。{@literal null}であってはいけません
     */
    public static void forEach(final File rootDir, final ResourceHandler handler) {
        assertArgumentNotNull("rootDir", rootDir);
        assertArgumentNotNull("handler", handler);

        forEach(rootDir, null, handler);
    }

    /**
     * ファイルシステムに含まれるリソースをトラバースします。
     * <p>

  public void testForEachUnknownOrder() {
    List<E> elements = new ArrayList<>();
    collection.forEach(elements::add);
    Helpers.assertEqualIgnoringOrder(asList(createSamplesArray()), elements);
  }

  @CollectionFeature.Require(KNOWN_ORDER)
  public void testForEachKnownOrder() {
    List<E> elements = new ArrayList<>();
    collection.forEach(elements::add);
    List<E> expected = Helpers.copyToList(getOrderedElements());

        compilationUnit.getImports().stream()
            .filter(anImport -> !anImport.isStatic())
            .map(anImport -> anImport.getNameAsString() + (anImport.isAsterisk() ? ".*" : ""))
            .forEach(anImport -> allClasses.forEach(classMetaData -> classMetaData.addImport(anImport)));
    }

    @Override
    public void visit(PackageDeclaration packageDeclaration, ClassMetaDataRepository<ClassMetaData> repository) {

        Map<String, List<String>> goals = new HashMap<>();
        lifecycle.allPhases().forEach(phase -> phase.plugins()
                .forEach(plugin -> plugin.getExecutions().forEach(exec -> exec.getGoals()
                        .forEach(goal -> goals.computeIfAbsent(phase.name(), n -> new ArrayList<>())

            return file.exists();
        }

        @Override
        public void forEach(final ClassHandler handler) {
            ClassTraversalUtil.forEach(baseDir, rootPackage, handler);
        }

        @Override
        public void forEach(final ResourceHandler handler) {
            ResourceTraversalUtil.forEach(baseDir, rootDir, handler);
        }

        @Override
        public void close() {

            searchLogList.stream().forEach(searchLog -> {
                searchLog.getUserInfo().ifPresent(userInfo -> {
                    searchLog.setUserInfoId(userInfo.getId());
                });
            });
            if (fessConfig.isLoggingSearchUseLogfile()) {
                insertList.forEach(this::writeSearchLogEvent);
                updateList.forEach(this::writeSearchLogEvent);
            }

        parameters.projectStates.get().values.forEach { projectExtension ->
            cleanUp(projectExtension.tmpExtractedResourcesDirs())
        }

        // Second run: collect and archive leftover files
        parameters.projectStates.get().forEach { (projectPath: String, projectExtension: TestFileCleanUpExtension) ->

        final URL classURL = ResourceUtil.getResource(classFilePath);
        final JarURLConnection con = (JarURLConnection) classURL.openConnection();
        ClassTraversalUtil.forEach(con.getJarFile(), (ClassHandler) (packageName, shortClassName) -> {
            if (count < 10) {
                System.out.println(ClassUtil.concatName(packageName, shortClassName));
            }