return 0x598df91c + reference.hashCode();
  }

  @Override
  public String toString() {
    return "Optional.of(" + reference + ")";
  }

  @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;

    return rankMap.hashCode();
  }

  @Override
  public String toString() {
    return "Ordering.explicit(" + rankMap.keySet() + ")";
  }

  @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;

    @Override
    public int end() {
      return matcher.end();
    }

    @Override
    public int start() {
      return matcher.start();
    }
  }

  @J2ktIncompatible private static final long serialVersionUID = 0;

        }

        this.revision = Byte.parseByte(st.nextToken());
        final String tmp = st.nextToken();
        long id = 0;
        if (tmp.startsWith("0x")) {
            id = Long.parseLong(tmp.substring(2), 16);
        } else {
            id = Long.parseLong(tmp);
        }

        this.identifier_authority = new byte[6];
        for (int i = 5; id > 0; i--) {

      }

    private fun uppercase(original: Source): Source {
      return object : ForwardingSource(original) {
        override fun read(
          sink: Buffer,
          byteCount: Long,
        ): Long {
          val mixedCase = Buffer()
          val count = original.read(mixedCase, byteCount)
          sink.writeUtf8(mixedCase.readUtf8().uppercase())
          return count
        }
      }
    }

 * It extends CrawlerSystemException and provides constructors to create instances with a message and/or a cause.
 *
 */
public class RobotsTxtException extends CrawlerSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new RobotsTxtException with the specified detail message and cause.
     * @param message the detail message
     * @param cause the cause of the exception
     */

/**
 * Exception thrown when a class cannot be found.
 *
 * @author higa
 */
public class ClassNotFoundRuntimeException extends ClRuntimeException {

    private static final long serialVersionUID = -9022468864937761059L;

    /**
     * The name of the class that could not be found.
     */
    private final String className;

    /**
     * Creates a {@link ClassNotFoundRuntimeException}.

 * This exception wraps underlying search engine errors and provides
 * meaningful error messages for troubleshooting.
 */
public class SearchEngineClientException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new SearchEngineClientException with the specified message and cause.
     *
     * @param message the detail message explaining the exception

    return INSTANCE;
  }

  @Override
  public String toString() {
    return "Ordering.usingToString()";
  }

  private UsingToStringOrdering() {}

  @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;

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

    private static OptionalEntity<BoostDocumentRule> getEntity(final CreateForm form, final String username, final long currentTime) {
        switch (form.crudMode) {
        case CrudMode.CREATE:
            return OptionalEntity.of(new BoostDocumentRule()).map(entity -> {
                entity.setCreatedBy(username);