try {
            final StreamResponse response = viewHelper.asContentResponse(doc);
            if (response.getHttpStatus().orElse(200) == 404) {
                logger.debug("Not found: {}", targetUrl);
                saveError(messages -> messages.addErrorsNotFoundOnFileSystem(GLOBAL, targetUrl));
                return redirect(ErrorAction.class);
            }
            return response;

    }

    /**
     * DEBUG情報が出力されるかどうかを返します。
     *
     * @return DEBUG情報が出力されるかどうか
     */
    public boolean isDebugEnabled() {
        return log.isDebugEnabled();
    }

    /**
     * DEBUG情報を出力します。
     *
     * @param message
     *            メッセージ
     * @param throwable
     *            例外
     */
    public void debug(final Object message, final Throwable throwable) {

        if (logger.isDebugEnabled()) {
            logger.debug("Initialize {}", this.getClass().getSimpleName());
        }
        fessConfig = ComponentUtil.getFessConfig();
    }

    public String getAccountId(final SID sid) {
        final int type = sid.getType();
        if (logger.isDebugEnabled()) {
            try {
                logger.debug("Processing SID: {} {} {}", type, sid, sid.toDisplayString());

            if (fessConfig.isCrawlerDocumentFileIgnoreEmptyContent() && StringUtil.isBlank(content)) {
                return null;
            }
            if (getLogger().isDebugEnabled()) {
                getLogger().debug("ExtractData: {}", extractData);
            }
            // meta
            extractData.getKeySet().stream().filter(k -> extractData.getValues(k) != null).forEach(key -> {

                    }
                    break;
                default:
                    break;
                }
            }
            catch ( IOException ioe ) {
                log.debug("Failed to lookup name", ioe);
            }
        }
        throw new UnknownHostException(name.name);
    }



    @Override

    public boolean isDebugEnabled() {
        return logger.isDebugEnabled();
    }

    @Override
    public void debug(final String message) {
        logger.debug(message);
    }

    @Override
    public void debug(final String message, final Throwable t) {
        logger.debug(message, t);
    }

            if (logger.isDebugEnabled()) {
                logger.debug("container was destroyed.");
            }
            return;
        } catch (final Exception e) {
            if (!ComponentUtil.available()) {
                if (logger.isDebugEnabled()) {
                    logger.debug("container was destroyed.");
                }
                return;
            }

                if (logger.isDebugEnabled()) {
                    logger.debug("Loading KeyMatch Query: {}, Size: {}", keyMatch.getQuery(), keyMatch.getMaxSize());
                }
                getDocumentList(keyMatch).stream().map(doc -> {
                    if (logger.isDebugEnabled()) {
                        logger.debug("Loaded KeyMatch doc: {}", doc);
                    }

            try {
                unregister(scheduledJob);
            } catch (final Exception e) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Failed to delete Job {}", scheduledJob, e);
                }
            }
            return;
        }

        final FessConfig fessConfig = ComponentUtil.getFessConfig();

                        try {
                            handlerClass = Class.forName(className);
                        }
                        catch ( Exception ex ) {
                            log.debug("Failed to load handler class " + className, ex);
                        }
                        if ( handlerClass == null ) {
                            handlerClass = ClassLoader.getSystemClassLoader().loadClass(className);