/** The key of the configuration. e.g. true */
    String MAIL_SEND_MOCK = "mail.send.mock";

    /** The key of the configuration. e.g. localhost:25 */
    String MAIL_SMTP_SERVER_MAIN_HOST_AND_PORT = "mail.smtp.server.main.host.and.port";

    /** The key of the configuration. e.g. [Test] */
    String MAIL_SUBJECT_TEST_PREFIX = "mail.subject.test.prefix";

    /** The key of the configuration. e.g. root@localhost */

                exceptionMessage = t.getClass().getSimpleName();
            }

            if (t instanceof UnknownHostException && !fullMessage.contains("host")) {
                fullMessage = join(fullMessage, "Unknown host " + exceptionMessage);
            } else if (!fullMessage.contains(exceptionMessage)) {
                fullMessage = join(fullMessage, exceptionMessage);
            }
        }

                + "-Dclassifier=aClassifier -Dpackaging=jar -Dfile=/path/to/file" + LS + LS
                + "  Alternatively, if you host your own repository you can deploy the file there: " + LS
                + "      mvn deploy:deploy-file -DgroupId=aGroupId -DartifactId=anArtifactId"

    @Override
    public DuplicateHostDbm asDBMeta() {
        return DuplicateHostDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "duplicate_host";
    }

    @Override
    public boolean hasSpecifiedColumn() {
        return _specification != null;
    }

    @Override
    public ConditionQuery localCQ() {
        return doGetConditionQuery();

        final String proxyPort = paramMap.get(CRAWLER_WEB_PREFIX + "proxyPort");
        if (StringUtil.isNotBlank(proxyHost) && StringUtil.isNotBlank(proxyPort)) {
            factoryParamMap.put(HcHttpClient.PROXY_HOST_PROPERTY, proxyHost);
            factoryParamMap.put(HcHttpClient.PROXY_PORT_PROPERTY, proxyPort);
            final String proxyUsername = paramMap.get(CRAWLER_WEB_PREFIX + "proxyUsername");

            case 8: // Kerberos Time
                // DERGeneralizedTime derTime = KerberosUtil.readAs(tagged,
                // DERGeneralizedTime.class);
                break;
            case 9: // Host Addresses
                ASN1Sequence adressesSequence = ASN1Util.as(ASN1Sequence.class, tagged);
                Enumeration<?> adresses = adressesSequence.getObjects();
                while ( adresses.hasMoreElements() ) {

    private static final String PROCESS_HELPER = "processHelper";

    private static final String JOB_HELPER = "jobHelper";

    private static final String DUPLICATE_HOST_HELPER = "duplicateHostHelper";

    private static final String PATH_MAPPING_HELPER = "pathMappingHelper";

    private static final String POPULAR_WORD_HELPER = "popularWordHelper";

    //                                                                       =============
    @Override
    public String asTableDbName() {
        return "duplicate_host";
    }

    @Override
    public String xgetAliasName() {
        return "duplicate_host";
    }

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

            params.put("Client IP", e.getClientIp());
            params.put("Referer", e.getReferer());
            params.put("Languages", e.getLanguages());
            params.put("Virtual Host", e.getVirtualHost());
            params.put("Roles", e.getRoles() != null ? String.join(" ", e.getRoles()) : StringUtil.EMPTY);
            params.put("User Agent", e.getUserAgent());

        });
    }

    protected Client createHttpClient(final FessConfig fessConfig, final String host) {
        final String[] hosts =
                split(host, ",").get(stream -> stream.map(String::trim).filter(StringUtil::isNotEmpty).toArray(n -> new String[n]));
        final Builder builder = Settings.builder().putList("http.hosts", hosts).put("processors", fessConfig.availableProcessors())