} else if (settings.get("synonyms_path") != null) {
                logger.warn("synonyms_path[{}] is empty.", settings.get("synonyms_path"));
            } else {
                logger.debug("No synonym data.");
            }
        }
    }

    @Override
    public Tokenizer create() {
        return new NGramSynonymTokenizer(n, delimiters, expand, ignoreCase, synonymLoader);
    }

                            buf.append('\n');
                        } catch (final Exception e) {
                            if (logger.isDebugEnabled()) {
                                logger.debug("Exception in an internal extractor.", e);
                            }
                        } finally {
                            CloseableUtil.closeQuietly(is);
                        }
                    }

                        if (logger.isDebugEnabled()) {
                            logger.debug("Exception in an internal extractor.", e);
                        }
                    }
                }
            }
        } catch (final MessagingException e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Exception in parsing BodyPart.", e);
            }
        }
    }

    /**

        }
        if (logger.isDebugEnabled()) {
            logger.debug("Closing FtpClient...");
        }
        ftpAuthenticationHolder = null;
        for (final FTPClient ftpClient : ftpClientQueue) {
            try {
                ftpClient.disconnect();
            } catch (final IOException e) {
                logger.debug("Failed to disconnect FTPClient.", e);
            }
        }
    }

                parser.setProperty(XMLConstants.ACCESS_EXTERNAL_SCHEMA, StringUtil.EMPTY);
            } catch (final Exception e) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Failed to set a property.", e);
                }
            }
            // parse a content
            parser.parse(is, handler);

            return handler.getDataMap();

        } catch (final OfficeException e) {
            throw new CrawlerSystemException("Failed to start officeManager.", e);
        }
        if (logger.isDebugEnabled()) {
            logger.debug(officeManager.getClass().getSimpleName() + " is started.");
        }
    }

    /**
     * Destroys the extractor by stopping the office manager.
     *

     * configured timeouts, authentication, and request headers.
     */
    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {
            logger.debug("Initializing {}", ApiExtractor.class.getName());
        }

        // httpclient
        final org.apache.http.client.config.RequestConfig.Builder requestConfigBuilder = RequestConfig.custom();

                throw new CrawlingAccessException("Bucket " + bucketName + " is not found.", e);
            case "NoSuchKey", "NoSuchObject":
                if (logger.isDebugEnabled()) {
                    logger.debug("{} is not an object.", path);
                }
                break;
            default:
                logger.warn(path + " is not an object.", e);
                break;
            }

                    ByteOrderMark.UTF_32BE, ByteOrderMark.UTF_32LE, BOM_UTF_7);
            if (bomIn.hasBOM()) {
                if (logger.isDebugEnabled()) {
                    logger.debug("BOM: {}", bomIn.getBOMCharsetName());
                }
                return bomIn.getBOMCharsetName();
            }
            final int c = bomIn.read(b);

            if (c == -1) {

                    writer.write(content);
                    writer.write('\n');
                } catch (final Exception e) {
                    if (logger.isDebugEnabled()) {
                        logger.debug("Exception in an internal extractor.", e);
                    }
                }
            }
        }
    }

    /**
     * Extracts text from embedded documents in the PDF.