*/
  interface InternalEntry<K, V, E extends InternalEntry<K, V, E>> {
    /** Gets the next entry in the chain. */
    E getNext();

    /** Gets the entry's hash. */
    int getHash();

    /** Gets the key for this entry. */
    K getKey();

    /** Gets the value for the entry. */
    V getValue();
  }

  /*

    }

    /**
     * Returns the unique identifier of this dictionary file.
     *
     * @return the dictionary file ID
     */
    public String getId() {
        return id;
    }

    /**
     * Gets the file path of this dictionary.
     *
     * @return the file path
     */
    public String getPath() {
        return path;
    }

    /**
     * Returns the timestamp of this dictionary file.
     *

            cb.query().setAvailable_Equal(Boolean.TRUE);
            cb.query().setUpdatedTime_GreaterThan(updateTime);
        });
    }

    /**
     * Gets a scheduled job by its ID.
     * @param id The ID of the scheduled job.
     * @return An optional entity of the scheduled job.
     */
    public OptionalEntity<ScheduledJob> getScheduledJob(final String id) {

     */
    public boolean isSuccess() {
        return returnCode == 0;
    }

    /**
     * Gets a human-readable error description.
     *
     * @return the error description
     */
    public String getError() {
        return error != null ? error : "Error code: " + returnCode;
    }

    /**
     * Sets the error message.
     *
     * @param error the error message
     */

     * Forces all crawlers to stop immediately.
     * Sets the force stop flag and stops all active crawler instances.
     */
    private void forceStop() {
        systemHelper.setForceStop(true);
        if (crawlerList != null) {
            for (final Crawler crawler : crawlerList) {
                crawler.stop();
            }
        }
    }

    /**
     * Gets the total execution time for index updates.
     *

      /*
       * We'll call the user callback or collect the values only when all inputs complete,
       * regardless of whether some failed. This lets us avoid calling expensive methods like
       * Future.get() when we don't need to (specifically, for whenAllComplete().call*()), and it
       * lets all futures share the same listener.
       *
       * We store `localFuturesOrNull` inside the listener because `this.futures` might be nulled

import com.google.common.annotations.J2ktIncompatible;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Preconditions;
import com.google.common.primitives.Ints;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.io.IOException;
import java.io.InvalidObjectException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

     * the server responds with `HTTP/1.0`, that will be exposed by [Response.protocol].
     *
     * [alpn]: http://tools.ietf.org/html/draft-ietf-tls-applayerprotoneg
     * [rfc_2616]: http://www.w3.org/Protocols/rfc2616/rfc2616.html
     * [rfc_7540]: https://tools.ietf.org/html/rfc7540
     * [rfc_7540_34]: https://tools.ietf.org/html/rfc7540#section-3.4
     *

    protected String getCharSet(final File file) {
        return charset;
    }

    /**
     * Gets the character encoding used for FTP operations.
     *
     * @return The character encoding
     */
    public String getCharset() {
        return charset;
    }

    /**
     * Sets the character encoding used for FTP operations.
     *
     * @param charset The character encoding to set
     */

         *
         * @return true if the thread has completed its crawling operation
         */
        public boolean isFinished() {
            return finished;
        }

        /**
         * Stops the crawling operation gracefully.
         * If a data store is currently active, this method calls
         * its stop method to halt the crawling process.
         */