saveError(messages -> messages.addErrorsDocumentNotFound(GLOBAL, form.docId));
                return redirect(ErrorAction.class);
            }
        }
        if (!fessConfig.isSearchFileProxyEnabled()) {
            return HtmlResponse.fromRedirectPathAsIs(targetUrl + hash);
        }
        final ViewHelper viewHelper = ComponentUtil.getViewHelper();
        try {

        return defaultValue;
    }

    default void setSystemPropertyAsInt(final String key, final int value) {
        setSystemProperty(key, Integer.toString(value));
    }

    default boolean isSearchFileProxyEnabled() {
        return getSystemPropertyAsBoolean(Constants.SEARCH_FILE_PROXY_PROPERTY, true);
    }

    default boolean isBrowserLocaleForSearchUsed() {