FessProp.propMap.clear();
        FessConfig fessConfig = new FessConfig.SimpleImpl() {
            @Override
            public String getSystemProperty(final String key, final String defaultValue) {
                return systemPropMap.getOrDefault(key, defaultValue);
            }

            @Override
            public boolean isCrawlerIgnoreRobotsTxt() {
                return false;
            }

            @Override

     * @param clazz the class type to convert the value to
     * @param defaultValue the default value to return if the key is not found or conversion fails
     * @return the converted value or the default value if not found
     */
    public static <T> T getValue(final Map<String, Object> doc, final String key, final Class<T> clazz, final T defaultValue) {
        final T value = getValue(doc, key, clazz);
        if (value == null) {

    private String getDefaultMessage() {
        try {
            final Method method = UriType.class.getMethod("message");
            final Object defaultValue = method.getDefaultValue();
            return defaultValue != null ? defaultValue.toString() : null;
        } catch (final Exception e) {
            return "{org.lastaflute.validator.constraints.UriType.message}";
        }
    }

     * @param key The key of the parameter.
     * @param defaultValue The default value if the parameter is not found.
     * @param clazz The class type to convert the parameter to.
     * @return The parameter value, or the default value if not found.
     */
    protected <T> T getInitParameter(final String key, final T defaultValue, final Class<T> clazz) {
        if (initParamMap != null) {
            try {

	columnType, err := findColumnType(tableName, "content")
	AssertEqual(t, err, nil)

	defVal, ok := columnType.DefaultValue()
	AssertEqual(t, defVal, "null")
	AssertEqual(t, ok, true)

	columnType2, err := findColumnType(tableName, "active")
	AssertEqual(t, err, nil)

	defVal, ok = columnType2.DefaultValue()
	bv, _ := strconv.ParseBool(defVal)
	AssertEqual(t, bv, false)
	AssertEqual(t, ok, true)

    @SuppressWarnings("unchecked") // Assume all default values are generics safe.
    T defaultValue = (T) defaultValues.getInstance(rawType);
    if (defaultValue != null) {
      return defaultValue;
    }
    @SuppressWarnings("unchecked") // ArbitraryInstances always returns generics-safe dummies.
    T value = (T) ArbitraryInstances.get(rawType);
    if (value != null) {
      return value;
    }

  }

  @Override
  public boolean isPresent() {
    return true;
  }

  @Override
  public T get() {
    return reference;
  }

  @Override
  public T or(T defaultValue) {
    checkNotNull(defaultValue, "use Optional.orNull() instead of Optional.or(null)");
    return reference;
  }

  @Override
  public Optional<T> or(Optional<? extends T> secondChoice) {
    checkNotNull(secondChoice);

          <description>The type of layout this repository uses for locating and storing artifacts - can be "legacy" or
            "default".</description>
          <type>String</type>
          <defaultValue>default</defaultValue>
        </field>
      </fields>
      <codeSegments>
        <codeSegment>
          <version>1.0.0</version>
          <code><![CDATA[
            public boolean equals( Object obj )

   * determined.
   */
  public static <T> @Nullable T get(Class<T> type) {
    T defaultValue = DEFAULTS.getInstance(type);
    if (defaultValue != null) {
      return defaultValue;
    }
    Class<? extends T> implementation = getImplementation(type);
    if (implementation != null) {
      return get(implementation);
    }

        // v1 == 0.
        .optional(defaultValue = 0),
      Adapters.INTEGER_AS_BIG_INTEGER,
      algorithmIdentifier,
      name,
      validity,
      name,
      subjectPublicKeyInfo,
      Adapters.BIT_STRING.withTag(tag = 1L).optional(),
      Adapters.BIT_STRING.withTag(tag = 2L).optional(),
      extension.asSequenceOf().withExplicitBox(tag = 3).optional(defaultValue = listOf()),
      decompose = {