private ListGenerators() {}

  public static class ImmutableListOfGenerator extends TestStringListGenerator {
    @Override
    protected List<String> create(String[] elements) {
      return ImmutableList.copyOf(elements);
    }
  }

  public static class BuilderAddListGenerator extends TestStringListGenerator {
    @Override
    protected List<String> create(String[] elements) {

  public void testCopyOf_map_empty() {
    Map<Class<?>, Object> in = emptyMap();
    ClassToInstanceMap<Object> map = ImmutableClassToInstanceMap.copyOf(in);
    assertTrue(map.isEmpty());
    assertThat(map).isSameInstanceAs(ImmutableClassToInstanceMap.of());
    assertThat(ImmutableClassToInstanceMap.copyOf(map)).isSameInstanceAs(map);
  }

  public void testOf_zero() {
    assertTrue(ImmutableClassToInstanceMap.of().isEmpty());
  }

  private ListGenerators() {}

  public static class ImmutableListOfGenerator extends TestStringListGenerator {
    @Override
    protected List<String> create(String[] elements) {
      return ImmutableList.copyOf(elements);
    }
  }

  public static class BuilderAddListGenerator extends TestStringListGenerator {
    @Override
    protected List<String> create(String[] elements) {

                ComponentUtil.getCrawlingConfigHelper().getDefaultConfig(ConfigType.DATA).ifPresent(entity -> {
                    copyBeanToBean(entity, form, copyOp -> {
                        copyOp.excludeNull();
                        copyOp.exclude(Stream.concat(Stream.of(Constants.COMMON_CONVERSION_RULE),
                                Stream.of(Constants.PERMISSIONS, Constants.VIRTUAL_HOSTS)).toArray(n -> new String[n]));

                ComponentUtil.getCrawlingConfigHelper().getDefaultConfig(ConfigType.FILE).ifPresent(entity -> {
                    copyBeanToBean(entity, form, copyOp -> {
                        copyOp.excludeNull();
                        copyOp.exclude(Stream.concat(Stream.of(Constants.COMMON_CONVERSION_RULE),
                                Stream.of(Constants.PERMISSIONS, Constants.VIRTUAL_HOSTS)).toArray(n -> new String[n]));

                ComponentUtil.getCrawlingConfigHelper().getDefaultConfig(ConfigType.WEB).ifPresent(entity -> {
                    copyBeanToBean(entity, form, copyOp -> {
                        copyOp.excludeNull();
                        copyOp.exclude(Stream.concat(Stream.of(Constants.COMMON_CONVERSION_RULE),
                                Stream.of(Constants.PERMISSIONS, Constants.VIRTUAL_HOSTS)).toArray(n -> new String[n]));

   * @since 20.0
   */
  @SafeVarargs
  public static <T extends @Nullable Object> FluentIterable<T> concat(
      Iterable<? extends T>... inputs) {
    return concatNoDefensiveCopy(Arrays.copyOf(inputs, inputs.length));
  }

  /**
   * Returns a fluent iterable that combines several iterables. The returned iterable has an

   * @since 20.0
   */
  @SafeVarargs
  public static <T extends @Nullable Object> FluentIterable<T> concat(
      Iterable<? extends T>... inputs) {
    return concatNoDefensiveCopy(Arrays.copyOf(inputs, inputs.length));
  }

  /**
   * Returns a fluent iterable that combines several iterables. The returned iterable has an

            logger.debug("Web protocols already contains: protocol={}", protocol);
            return;
        }
        webProtocols = Arrays.copyOf(webProtocols, webProtocols.length + 1);
        webProtocols[webProtocols.length - 1] = prefix;
    }

    /**
     * Adds a new file protocol to the supported protocols list.

    E newEntry(S segment, K key, int hash, @Nullable E next);

    /**
     * Returns a freshly created entry, typed at the {@code E} type, for the given {@code segment},
     * that is a copy of the given {@code entry}.
     */
    E copy(S segment, E entry, @Nullable E newNext);

    /**
     * Sets the value of the given {@code entry} in the given {@code segment} to be the given {@code
     * value}
     */