return env.get("COMPUTERNAME");
        }
        if (env.containsKey("HOSTNAME")) {
            return env.get("HOSTNAME");
        }
        try {
            return InetAddress.getLocalHost().getHostAddress();
        } catch (final UnknownHostException e) {
            logger.debug("Unknown hostname.", e);
        }
        return "Unknown";
    }

    /** The key of the message: Excluded URLs For Indexing */
    public static final String LABELS_EXCLUDED_DOC_URLS = "{labels.excludedDocUrls}";

    /** The key of the message: Hostname */
    public static final String LABELS_HOSTNAME = "{labels.hostname}";

    /** The key of the message: ID */
    public static final String LABELS_ID = "{labels.id}";

    /** The key of the message: Included Paths For Crawling */

    String CRAWLER_DOCUMENT_SITE_ENCODING = "crawler.document.site.encoding";

    /** The key of the configuration. e.g. unknown */
    String CRAWLER_DOCUMENT_UNKNOWN_HOSTNAME = "crawler.document.unknown.hostname";

    /** The key of the configuration. e.g. false */
    String CRAWLER_DOCUMENT_USE_SITE_ENCODING_ON_ENGLISH = "crawler.document.use.site.encoding.on.english";

 * See {@link TrieParser}.
 *
 * @since 16.0
 */
@GwtCompatible
@Beta
public final class PublicSuffixPatterns {
  private PublicSuffixPatterns() {}

  /** If a hostname is contained as a key in this map, it is a public suffix. */
  public static final ImmutableMap<String, PublicSuffixType> EXACT =
      TrieParser.parseTrie(