if (replacedLine.length() == 0) {
                    if (updater != null) {
                        updater.write(line);
                    }
                    continue;
                }

                String[] inputs;
                String output;

                final Matcher m = parsePattern.matcher(replacedLine);

                if (!m.find()) {

                if (replacedLine.length() == 0) {
                    if (updater != null) {
                        updater.write(line);
                    }
                    continue;
                }

                final Matcher m = parsePattern.matcher(replacedLine);

                if (!m.find()) {
                    logger.warn("Failed to parse {} in {}", line, path);

                        continue;
                    }

                    if (Constants.FALSE.equals(map.get(Constants.INDEXING_TARGET))) {
                        if (logger.isDebugEnabled()) {
                            logger.debug("Skipped. This document is not a index target. ");
                        }
                        continue;
                    }

                }
            }
            return FileVisitResult.CONTINUE;
        }

        @Override
        public FileVisitResult visitFileFailed(final Path file, final IOException e) throws IOException {
            if (e != null) {
                logger.warn("I/O exception on {}", file, e);
            }
            return FileVisitResult.CONTINUE;
        }

        @Override

            final Object idValue = inputDoc.get(fessConfig.getIndexFieldId());
            if (idValue == null) {
                continue;
            }

            final Object configIdValue = inputDoc.get(fessConfig.getIndexFieldConfigId());
            if (configIdValue == null) {
                continue;
            }

            final QueryBuilder queryBuilder = QueryBuilders.boolQuery()

                if (line.length() == 0 || line.charAt(0) == '#') {
                    if (updater != null) {
                        updater.write(line);
                    }
                    continue; // ignore empty lines and comments
                }

                String[] inputs;
                String[] outputs;

                final List<String> sides = split(line, "=>");

                startedCrawlerNum++;
                activeCrawlerNum++;
                ThreadUtil.sleep(crawlingExecutionInterval);
                continue;
            }

            // check status
            for (int i = 0; i < startedCrawlerNum; i++) {

                    if (StringUtil.isEmpty(username)) {
                        logger.warn("username is empty. fileAuth:{}", fileAuthName);
                        continue;
                    }

                    final SmbAuthentication smbAuth = new SmbAuthentication();
                    smbAuth.setDomain(domain == null ? StringUtil.EMPTY : domain);

                final String suggestWord = getValue(list, 0);
                if (StringUtil.isBlank(suggestWord)) {
                    // skip
                    continue;
                }
                try {
                    final String[] permissions = split(getValue(list, 2), ",").get(stream -> stream.map(permissionHelper::encode)

                    if (StringUtil.isNotBlank(responseData.getRedirectLocation())) {
                        u = responseData.getRedirectLocation();
                        continue;
                    }
                    if (StringUtil.isBlank(responseData.getUrl())) {
                        throw new ThumbnailGenerationException(