*
     * @param key   the key of the feature
     * @param value the value of the feature
     */
    public void addFeature(final String key, final String value) {
        if (StringUtil.isBlank(key) || StringUtil.isBlank(value)) {
            throw new CrawlerSystemException("key or value is null.");
        }

        featureMap.put(key, value);
    }

    /**
     * Adds a property to the extractor.

            outputBufferLengthField.setAccessible(true);
            int actualOutputBufferLength = (int) outputBufferLengthField.get(request);

            // Should use the minimum of the two values
            int expectedLength = (Math.min(32768, 16384) - Smb2QueryInfoResponse.OVERHEAD) & ~0x7;
            assertEquals(expectedLength, actualOutputBufferLength);
        } catch (Exception e) {

     *
     * @param values the array of JVM options to filter
     * @return the filtered array of JVM options applicable to the current Java version
     */
    public static String[] filterJvmOptions(final String[] values) {
        final int version = getJavaVersion();
        return Arrays.stream(values).map(s -> {
            final Matcher matcher = VERSION_PREFIX_PATTERN.matcher(s);

    sort(values, navigableSet.comparator());

    // some tests assume SEVERAL == 3
    if (values.size() >= 1) {
      a = values.get(0);
      if (values.size() >= 3) {
        b = values.get(1);
        c = values.get(2);
      }
    }
  }

  /** Resets the contents of navigableSet to have elements a, c, for the navigation tests. */
  protected void resetWithHole() {

     */
    protected static String getContextPath() {
        final String value = System.getProperty(FESS_CONTEXT_PATH);
        if (value != null && !"/".equals(value)) {
            return value;
        }
        return StringUtil.EMPTY;
    }

    /**
     * Gets the Tomcat configuration path from system properties.
     *

    @Override
    public @Nullable K get(@Nullable Object value) {
      if (value == null || valueTable == null) {
        return null;
      }
      int bucket = Hashing.smear(value.hashCode()) & mask;
      for (ImmutableMapEntry<K, V> entry = valueTable[bucket];
          entry != null;
          entry = entry.getNextInValueBucket()) {
        if (value.equals(entry.getValue())) {
          return entry.getKey();

        assertEquals("test+value", DocumentUtil.encodeUrl("test+value"));
    }

    public void test_encodeUrl_special_characters() {
        assertEquals("test&value", DocumentUtil.encodeUrl("test&value"));
        assertEquals("test=value", DocumentUtil.encodeUrl("test=value"));
        assertEquals("test?value", DocumentUtil.encodeUrl("test?value"));
        assertEquals("test#value", DocumentUtil.encodeUrl("test#value"));

constraints.DecimalMax.message = {item} moet kleiner zijn dan {value}.
constraints.DecimalMin.message = {item} moet groter zijn dan {value}.
constraints.Digits.message = {item} moet een getal zijn. (Verwacht: <getal>.<getal>)
constraints.Future.message = {item} moet een toekomstige waarde zijn.
constraints.Max.message = {item} moet kleiner of gelijk zijn aan {value}.
constraints.Min.message = {item} moet groter of gelijk zijn aan {value}.

constraints.DecimalMax.message = {item} должно быть меньше {value}.
constraints.DecimalMin.message = {item} должно быть больше {value}.
constraints.Digits.message = {item} должно быть числом. (ожидается: <число>.<число>)
constraints.Future.message = {item} должно быть будущим значением.
constraints.Max.message = {item} должно быть меньше или равно {value}.
constraints.Min.message = {item} должно быть больше или равно {value}.
constraints.NotNull.message = {item} обязательно.

ery\":\"NONE\",\"boost\":0.5}}},{\"match_phrase\":{\"content\":{\"query\":\"xxx:aaa\",\"slop\":0,\"zero_terms_query\":\"NONE\",\"boost\":0.05}}},{\"fuzzy\":{\"title\":{\"value\":\"xxx:aaa\",\"fuzziness\":\"AUTO\",\"prefix_length\":0,\"max_expansions\":10,\"transpositions\":true,\"boost\":0.01}}},{\"fuzzy\":{\"content\":{\"value\":\"xxx:aaa\",\"fuzziness\":\"AUTO\",\"prefix_length\":0,\"max_expansions\":10,\"transpositions\":true,\"boost\":0.005}}}],\"adjust_pure_negative\":true,\"boost\":1.0}}",...