public static String nullToEmpty(@Nullable String string) {
    return Platform.nullToEmpty(string);
  }

  /**
   * Returns the given string if it is nonempty; {@code null} otherwise.
   *
   * @param string the string to test and possibly return
   * @return {@code string} itself if it is nonempty; {@code null} if it is empty or null
   */
  public static @Nullable String emptyToNull(@Nullable String string) {

  public static String nullToEmpty(@Nullable String string) {
    return Platform.nullToEmpty(string);
  }

  /**
   * Returns the given string if it is nonempty; {@code null} otherwise.
   *
   * @param string the string to test and possibly return
   * @return {@code string} itself if it is nonempty; {@code null} if it is empty or null
   */
  public static @Nullable String emptyToNull(@Nullable String string) {

    @Size(max = 10)
    public String searchFileProxy;

    /** Enable or disable using browser locale for search. */
    @Size(max = 10)
    public String searchUseBrowserLocale;

    /** SSO type (none, oic, saml, spnego, entraid). */
    @Size(max = 100)
    public String ssoType;

    /** User agent string for crawling operations. */
    @Size(max = 1000)
    public String crawlingUserAgent;

     */
    default void putResultDataWithTemplate(final Map<String, Object> dataMap, final String key, final Object value, final String template,
            final String scriptType) {
        Object target = value;
        if (template != null) {
            final Map<String, Object> contextMap = new HashMap<>();
            contextMap.put("doc", dataMap);
            final Map<String, Object> paramMap = new HashMap<>(dataMap.size() + 2);

    }

    String getCrawlerMetadataNameMapping();

    default Tuple3<String, String, String> getCrawlerMetadataNameMapping(final String name) {
        @SuppressWarnings("unchecked")
        Map<String, Tuple3<String, String, String>> params =
                (Map<String, Tuple3<String, String, String>>) propMap.get(CRAWLER_METADATA_NAME_MAPPING);
        if (params == null) {

    }

    private String getAsQuery(final Map<String, String[]> conditions) {
        return getQuery("", new String[0], Collections.emptyMap(), conditions, false);
    }

    private String getQuery(final String query, final String[] extraQueries, final Map<String, String[]> fields,
            final Map<String, String[]> conditions, final boolean escape) {

    }

    @Test
    public void test_getCacheKey_emptyArrays() {
        String seed = "test_seed";
        String[] tags = new String[0];
        String[] roles = new String[0];
        String[] fields = new String[0];
        String[] excludes = new String[0];

        String result = popularWordHelper.getCacheKey(seed, tags, roles, fields, excludes);

        assertNotNull(result);

        method.setAccessible(true);

        Map<String, String> dataMap = new HashMap<>();
        dataMap.put("key1", "value1");
        dataMap.put("key2", "");
        dataMap.put("key3", null);

        // Test with existing value
        String result1 = (String) method.invoke(crawler, dataMap, "key1", "default");

        String message, String a1, String a2, String a3, String a4) {
      super(message);
    }

    public ExceptionWithManyConstructorsButOnlyOneThrowable(
        String message, String a1, String a2, String a3, String a4, String a5) {
      super(message);
    }

    public ExceptionWithManyConstructorsButOnlyOneThrowable(
        String message, String a1, String a2, String a3, String a4, String a5, String a6) {

    String[] array = new String[] {"a"};
    Multiset<String> multiset = ImmutableSortedMultiset.copyOf(array);
    assertEquals(HashMultiset.create(asList("a")), multiset);
  }

  public void testCreation_arrayOfArray() {
    Comparator<String[]> comparator =
        Ordering.natural().lexicographical().onResultOf(Arrays::asList);
    String[] array = new String[] {"a"};