return new CopyOptions().converter(converter, propertyNames);
    }

    /**
     * Returns a {@link CopyOptions} with a date converter applied.
     *
     * @param pattern
     *            The date pattern. Must not be {@literal null} or an empty string.
     * @param propertyNames

            return "set" + capitalizeName(propertyName);
        }

        public boolean isValidPropertyName(String propertyName) {
            return propertyName != null && propertyName.length() > 0;
        }

        private String capitalizeName(String name) {
            if (name == null || name.isEmpty()) {
                return name;
            }

    public PropertyDescImpl(final String propertyName, final Class<?> propertyType, final Method readMethod, final Method writeMethod,
            final Field field, final BeanDesc beanDesc) {
        assertArgumentNotEmpty("propertyName", propertyName);
        assertArgumentNotNull("propertyType", propertyType);
        assertArgumentNotNull("beanDesc", beanDesc);

        this.propertyName = propertyName;
        this.propertyType = propertyType;

     * Returns whether the {@link PropertyDesc} exists.
     *
     * @param propertyName
     *            The property name. Must not be {@literal null} or empty string
     * @return Whether the {@link PropertyDesc} exists
     */
    boolean hasPropertyDesc(String propertyName);

    /**
     * Returns the {@link PropertyDesc}.
     *
     * @param propertyName
     *            The property name. Must not be {@literal null} or empty string

            for (final Map.Entry<String, Object> entry : httpClientPropertyMap.entrySet()) {
                final String propertyName = entry.getKey();
                if (beanDesc.hasPropertyDesc(propertyName)) {
                    final PropertyDesc propertyDesc = beanDesc.getPropertyDesc(propertyName);
                    propertyDesc.setValue(closeableHttpClient, entry.getValue());
                } else {

            final VaErrorHook hook) {
        if (values.length == 0) {
            return;
        }
        for (final String value : values) {
            if (value.indexOf(',') >= 0) {
                action.throwValidationError(messages -> {
                    messages.addErrorsInvalidStrIsIncluded(propertyName, value, ",");
                }, hook);

            final VaErrorHook hook) {
        if (values.length == 0) {
            return;
        }
        for (final String value : values) {
            if (value.indexOf(',') >= 0) {
                action.throwValidationError(messages -> {
                    messages.addErrorsInvalidStrIsIncluded(propertyName, value, ",");
                }, hook);

     * Validate the protected word string.
     * @param action The action.
     * @param values The values.
     * @param propertyName The property name.
     * @param hook The error hook.
     */
    private static void validateProtwordsString(final FessBaseAction action, final String values, final String propertyName,
            final VaErrorHook hook) {
        // TODO validation
    }

            for (final Map.Entry<String, Object> entry : httpClientPropertyMap.entrySet()) {
                final String propertyName = entry.getKey();
                if (beanDesc.hasPropertyDesc(propertyName)) {
                    final PropertyDesc propertyDesc = beanDesc.getPropertyDesc(propertyName);
                    propertyDesc.setValue(closeableHttpClient, entry.getValue());
                } else {

            }, () -> asListHtml(dictId));
        }
    }

    private static void validateStopwordsString(final String values, final String propertyName, final VaErrorHook hook) {
        // TODO validation
    }

    // ===================================================================================