final Builder builder = Settings.builder().putList("http.hosts", hosts).put("processors", fessConfig.getCrawlerHttpProcessors())
                .put("http.heartbeat_interval", fessConfig.getFesenHeartbeatInterval());
        final String username = fessConfig.getFesenUsername();
        final String password = fessConfig.getFesenPassword();

domain.title = Fess

# Search Engine
search_engine.type=default
search_engine.http.url=http://localhost:9201
search_engine.http.ssl.certificate_authorities=
search_engine.username=
search_engine.password=
search_engine.heartbeat_interval=10000

# Cryptographer
app.cipher.algorism=aes
app.cipher.key=___change__me___
app.digest.algorism=sha256
app.encrypt.property.pattern=.*password|.*key|.*token|.*secret

app.extension.names=

        Integer value = getSearchEngineHeartbeatIntervalAsInteger();
        if (value != null) {
            return value.longValue();
        }
        value = getAsInteger("elasticsearch.heartbeat_interval");
        if (value != null) {
            return value.longValue();
        }
        return 10000L;
    }

        final Builder builder = Settings.builder().putList("http.hosts", hosts).put("processors", fessConfig.availableProcessors())
                .put("http.heartbeat_interval", fessConfig.getFesenHeartbeatInterval());
        final String username = fessConfig.getFesenUsername();
        final String password = fessConfig.getFesenPassword();

    /**
     * Get the value for the key 'search_engine.heartbeat_interval'. <br>
     * The value is, e.g. 10000 <br>
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getSearchEngineHeartbeatInterval();

    /**
     * Get the value for the key 'search_engine.heartbeat_interval' as {@link Integer}. <br>
     * The value is, e.g. 10000 <br>