*/
  public ByteSource slice(long offset, long length) {
    return new SlicedByteSource(offset, length);
  }

  /**
   * Returns whether the source has zero bytes. The default implementation first checks {@link
   * #sizeIfKnown}, returning true if it's known to be zero and false if it's known to be non-zero.
   * If the size is not known, it falls back to opening a stream and checking for EOF.
   *

        // Default constructor
    }

    /**
     * Checks if the given input stream contains valid sitemap data.
     * @param in the input stream to validate
     * @return true if the stream contains valid sitemap data, false otherwise
     */
    public boolean isValid(final InputStream in) {
        return isValid(in, true);
    }

    /**
     * Checks if the given input stream contains valid sitemap data.

    /** Scroll timeout for update operations */
    protected String scrollForUpdate = "1m";

    /** Maximum retry attempts for configuration synchronization status checks */
    protected int maxConfigSyncStatusRetry = 10;

    /** Maximum retry attempts for search engine status checks */
    protected int maxEsStatusRetry = 60;

    /** Name of the search engine cluster */
    protected String clusterName = "fesen";

 *   <li>Handling cases where no URL is in the queue</li>
 *   <li>Handling cases where no response processor or rule is found</li>
 *   <li>Handling system errors</li>
 * </ul>
 *
 * <p>
 * Each logging method checks the log level before logging the message.
 * The log level can be configured in the Log4j2 configuration file.
 * </p>
 *
 */
public class LogHelperImpl implements LogHelper {

    /** Logger for this class. */

    protected static final int MAX_BUF_SIZE = 10 * 1024 * 1024; // 10m

    /**
     * Validates that a given path is safe and does not attempt path traversal attacks.
     * <p>
     * This method checks if the resolved absolute path starts with the allowed base directory,
     * preventing access to files outside the intended directory through path traversal
     * techniques like "../../../etc/passwd".
     * </p>
     * <p>

        if (value != null) {
            return value;
        }
        return defaultValue;
    }

    /**
     * Determines if the given path represents a web crawling target.
     * Checks if the path starts with HTTP or HTTPS protocols.
     *
     * @param path the path to check
     * @return true if the path is a web crawling path, false otherwise
     */

        while (current != null) {
            buf.append(current.getLocalizedMessage()).append(' ');
            current = current.getCause();
        }
        return buf.toString();
    }

    /**
     * Checks if a checkbox value represents an enabled state.
     * This method considers "on" and "true" (case-insensitive) as enabled values.
     *
     * @param value the checkbox value to check

   * {@code true} if and only if this queue contains at least one element {@code e} such that {@code
   * o.equals(e)}.
   *
   * @param o object to be checked for containment in this queue
   * @return {@code true} if this queue contains the specified element
   */
  @CanIgnoreReturnValue // pushed down from class to method
  @Override

 *   <li>{@link #getDefaultIndexSettings()}: Returns the default settings for the suggestion index.</li>
 *   <li>{@link #isSuggestIndex(String)}: Checks if the given index name is a suggestion index.</li>
 * </ul>
 */
public class Suggester {
    private static final Logger logger = LogManager.getLogger(Suggester.class);

				hkv.Key, subSys, subSys)
		}
	}
	c[subSys][tgt] = currKVS
	return dynamic, nil
}

// CheckValidKeys - checks if the config parameters for the given subsystem and
// target are valid. It checks both the configuration store as well as
// environment variables.
func (c Config) CheckValidKeys(subSys string, deprecatedKeys []string) error {
	defKVS, ok := DefaultKVS[subSys]