private void validateString(String element, String value) {
        validateNonNull(element, value, () -> validateNonEmpty(element, value, String::isBlank));
    }

    private <T> void validateCollection(String element, Collection<T> value, Consumer<T> validator) {
        validateNonNull(element, value, () -> {
            validateNonEmpty(element, value, Collection::isEmpty);
            value.forEach(validator);
        });

    }

		<Property name="backup.max.age" value="90" />
		<Property name="backup.audit.max.age" value="360" />
		<Property name="backup.searchlog.max.age" value="90" />
		<Property name="audit.log.pattern" value="%msg%n" />
		<Property name="searchlog.log.pattern" value="%msg%n" />
		<Property name="llm.log.level" value="${sys:fess.llm.log.level:-info}" />
	</Properties>

	<Appenders>

    }
  }

  /** getAndSet returns previous value and sets to given value */
  public void testGetAndSet() {
    double prev = Math.E;
    AtomicDouble at = new AtomicDouble(prev);
    for (double x : VALUES) {
      assertBitEquals(prev, at.getAndSet(x));
      prev = x;
    }
  }

  /** getAndAdd returns previous value and adds given value */
  public void testGetAndAdd() {
    for (double x : VALUES) {

	ErrInvalidBrowserValue = newErrFn(
		"Invalid console value",
		"Please check the passed value",
		"Environment can only accept `on` and `off` values. To disable Console access, set this value to `off`",
	)

	ErrInvalidFSOSyncValue = newErrFn(
		"Invalid O_SYNC value",
		"Please check the passed value",
		"Can only accept `on` and `off` values. To enable O_SYNC for fs backend, set this value to `on`",
	)

            final Object value = sourceArray[i].get(FieldNames.ARRAY_VALUE);
            if (value != null) {
                valueArray[i] = value.toString();
            }
        }
        return valueArray;
    }

    /**
     * Add a value.
     * @param key Key
     * @param value Value
     */
    public void add(final String key, final Object value) {
        if (logger.isDebugEnabled()) {

     *
     * @param key the property key to look up
     * @param defaultValue the default value if the property is not found or invalid
     * @return the long value or default value
     */
    protected Long getDefaultLong(final String key, final Long defaultValue) {
        final String value = systemProperties.getProperty(key);
        if (value != null) {
            try {

        checkSpecifiedProperty("value");
        return convertEmptyToNull(value);
    }

    public void setValue(String value) {
        registerModifiedProperty("value");
        this.value = value;
    }

        <set>
          <option value="io.reactivex.annotations.Beta" />
          <option value="io.reactivex.annotations.Experimental" />
          <option value="org.apache.http.annotation.Beta" />
          <option value="org.gradle.api.Incubating" />
          <option value="org.jetbrains.annotations.ApiStatus.Experimental" />
          <option value="rx.annotations.Beta" />
          <option value="rx.annotations.Experimental" />

		{[]byte(`<FilterRule><Value></Value></FilterRule>`), nil, true},
		{[]byte(`<FilterRule><Name></Name><Value></Value></FilterRule>`), nil, true},
		{[]byte(`<FilterRule><Name>Prefix</Name><Value>Hello/世界</Value></FilterRule>`), nil, true},
		{[]byte(`<FilterRule><Name>ends</Name><Value>foo/bar</Value></FilterRule>`), nil, true},

        byte[] value = avSingleHost.getRaw();
        assertNotNull(value);
        assertEquals(48, value.length);

        // Verify the size field (first 4 bytes)
        assertEquals(48, (value[0] & 0xFF) | ((value[1] & 0xFF) << 8) | ((value[2] & 0xFF) << 16) | ((value[3] & 0xFF) << 24));
        // Verify the zero field (next 4 bytes)