if (languages != null) {
                searchLog.setLanguages(StringUtils.join((String[]) languages, ","));
            } else {
                searchLog.setLanguages(StringUtil.EMPTY);
            }

            @SuppressWarnings("unchecked")
            final Map<String, List<String>> fieldLogMap = (Map<String, List<String>>) req.getAttribute(Constants.FIELD_LOGS);
            if (fieldLogMap != null) {

     */
    String DEFAULT_SELF_COMBINATION_MODE = SELF_COMBINATION_MERGE;

    @Nonnull
    String getName();

    @Nonnull
    String getNamespaceUri();

    @Nonnull
    String getPrefix();

    @Nullable
    String getValue();

    @Nonnull
    Map<String, String> getAttributes();

    @Nullable
    String getAttribute(@Nonnull String name);

    @Nonnull

    TreeMultimap<@Nullable String, @Nullable Integer> multimap = createPopulate();
    assertThat(multimap.entries())
        .containsExactly(
            Maps.<@Nullable String, Integer>immutableEntry(null, 7),
            Maps.<@Nullable String, Integer>immutableEntry(null, 3),
            Maps.<@Nullable String, Integer>immutableEntry(null, 1),
            Maps.<String, @Nullable Integer>immutableEntry("tree", null),

    @Size(max = 10)
    public String webApiJson;

    @Size(max = 10000)
    public String appValue;

    @Size(max = 1000)
    public String defaultLabelValue;

    @Size(max = 1000)
    public String defaultSortValue;

    @Size(max = 10000)
    public String virtualHostValue;

    @Size(max = 10)
    public String appendQueryParameter;

    @Size(max = 10)

            final String value = processVirtualHost(s -> s, StringUtil.EMPTY);
            LaRequestUtil.getOptionalRequest().ifPresent(req -> req.setAttribute(FessConfig.VIRTUAL_HOST_VALUE, value));
            return value;
        });
    }

    protected <T> T processVirtualHost(final Function<String, T> func, final T defaultValue) {

        assertNull(DocumentUtil.getValue(doc, "key2", String.class));
    }

    public void test_strings() {
        Map<String, Object> doc = new HashMap<>();
        doc.put("key1", new String[] { "aaa", "bbb" });
        assertArrayEquals(new String[] { "aaa", "bbb" }, DocumentUtil.getValue(doc, "key1", String[].class));
        assertEquals(Arrays.asList("aaa", "bbb"), (List<String>) DocumentUtil.getValue(doc, "key1", List.class));
    }

type RootFlags struct {
	kubeconfig       *string
	configContext    *string
	impersonate      *string
	impersonateUID   *string
	impersonateGroup *[]string
	namespace        *string
	istioNamespace   *string

	defaultNamespace string
}

func AddRootFlags(flags *pflag.FlagSet) *RootFlags {
	r := &RootFlags{
		kubeconfig:       ptr.Of[string](""),
		configContext:    ptr.Of[string](""),
		impersonate:      ptr.Of[string](""),

    protected transient volatile Map<ConfigName, Map<String, String>> configParameterMap;

    protected CrawlerClientFactory crawlerClientFactory = null;

    public FileConfig() {
        setBoost(1.0f);
    }

    @Override
    public String getDocumentBoost() {
        return getBoost().toString();
    }

    @Override
    public String getIndexingTarget(final String input) {

    Entry<String, String>[] array = (Entry<String, String>[]) new Entry<?, ?>[entries.length];
    int i = 0;
    for (Object o : entries) {
      @SuppressWarnings("unchecked")
      Entry<String, String> e = (Entry<String, String>) o;
      array[i++] = e;
    }
    return create(array);
  }

  protected abstract Map<String, String> create(Entry<String, String>[] entries);

  @Override
  @SuppressWarnings("unchecked")

    private static final String LOGGING_PROPERTIES = "logging.properties";

    private static final String FESS_CONTEXT_PATH = "fess.context.path";

    private static final String FESS_PORT = "fess.port";

    private static final String FESS_TEMP_PATH = "fess.temp.path";

    private static final String FESS_VAR_PATH = "fess.var.path";

    private static final String FESS_WEBAPP_PATH = "fess.webapp.path";