return string || "";
  }-*/;

  @JsMethod
  static native String emptyToNull(@Nullable String string) /*-{
    return string || null;
  }-*/;

  static CommonPattern compilePattern(String pattern) {
    throw new UnsupportedOperationException();
  }

  static boolean patternCompilerIsPcreLike() {
    throw new UnsupportedOperationException();
  }

  private Platform() {}

        return getPath("WEB-INF/", "env/" + envName, names);
    }

    protected static Path getPath(final String root, final String base, final String... names) {

        try {
            final ServletContext servletContext = ComponentUtil.getComponent(ServletContext.class);
            final String webinfPath = servletContext.getRealPath("/" + root + base);

public interface FessTransformer {

    Map<String, String> parentEncodingMap = Collections.synchronizedMap(new LruHashMap<>(1000));

    FessConfig getFessConfig();

    Logger getLogger();

    default String getHost(final String u) {
        if (StringUtil.isBlank(u)) {
            return StringUtil.EMPTY; // empty
        }

        String url = u;
        final String originalUrl = url;

        // from config
        final String scriptType = crawlingConfig.getScriptType();
        final Map<String, String> scriptConfigMap = crawlingConfig.getConfigParameterMap(ConfigName.SCRIPT);
        final Map<String, String> metaConfigMap = crawlingConfig.getConfigParameterMap(ConfigName.META);
        for (final Map.Entry<String, String> entry : metaConfigMap.entrySet()) {
            final String key = entry.getKey();

    private Artifact createArtifactX(String groupId, String artifactId, String version, String scope, String type) {
        return createArtifactX(groupId, artifactId, version, scope, type, null, null);
    }

    private Artifact createDependencyArtifactX(
            String groupId,
            String artifactId,
            VersionRange versionRange,
            String type,
            String classifier,

                new TestStringListMultimapGenerator() {
                  @Override
                  protected ListMultimap<String, String> create(Entry<String, String>[] entries) {
                    ListMultimap<String, String> multimap = ArrayListMultimap.create();
                    for (Entry<String, String> entry : entries) {
                      multimap.put(entry.getKey(), entry.getValue());
                    }

        @Override
        public Map<String, String[]> getFields() {
            final Map<String, String[]> fields = new HashMap<>();
            for (final Map.Entry<String, String[]> entry : request.getParameterMap().entrySet()) {
                final String key = entry.getKey();
                if (key.startsWith("fields.")) {
                    final String[] value = simplifyArray(entry.getValue());

  private static final Predicate<@Nullable String> NOT_LENGTH_3 =
      input -> input == null || input.length() != 3;
  private static final Predicate<@Nullable Integer> EVEN = input -> input == null || input % 2 == 0;
  static final Predicate<Entry<String, Integer>> CORRECT_LENGTH =
      input -> input.getKey().length() == input.getValue();

  abstract Map<String, Integer> createUnfiltered();

	testCases := []struct {
		meta   map[string]string
		ondisk bool
	}{
		{
			// restore in progress
			meta: map[string]string{
				xhttp.AmzRestore: ongoingRestoreObj().String(),
			},
			ondisk: false,
		},
		{
			// restore completed
			meta: map[string]string{
				xhttp.AmzRestore: completedRestoreObj(time.Now().Add(time.Hour)).String(),
			},
			ondisk: true,
		},
		{

            .<String>nodeOrder(ElementOrder.<String>natural());
    ImmutableValueGraph.Builder<String, Integer> immutableValueGraphBuilder =
        graphBuilder.<String, Integer>immutable();

    // Update ValueGraphBuilder, but this shouldn't impact immutableValueGraphBuilder
    graphBuilder.allowsSelfLoops(false).nodeOrder(ElementOrder.<String>unordered());