*
     * @return the maximum site length as configured
     */
    default int getMaxSiteLength() {
        return getFessConfig().getCrawlerDocumentMaxSiteLengthAsInteger();
    }

    /**
     * Abbreviates a site string to the maximum allowed length if configured.
     *
     * @param value the site string to abbreviate

            @Override
            public String getCrawlerDocumentUnknownHostname() {
                return "unknown";
            }

            @Override
            public Integer getCrawlerDocumentMaxSiteLengthAsInteger() {
                return -1;
            }
        });
        final ProtocolHelper protocolHelper = new ProtocolHelper();
        protocolHelper.init();

     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     * @throws NumberFormatException When the property is not integer.
     */
    Integer getCrawlerDocumentMaxSiteLengthAsInteger();

    /**
     * Get the value for the key 'crawler.document.site.encoding'. <br>
     * The value is, e.g. UTF-8 <br>
     * comment: Encoding for site names in documents.