//                                                                          Definition
    //                                                                          ==========
    /** The serial version UID for object serialization. (Default) */
    private static final long serialVersionUID = 1L;
    private final FessUser user;

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

 * query is malformed, contains invalid syntax, or violates query constraints.
 */
public class InvalidQueryException extends FessSystemException {

    /** Serial version UID for serialization */
    private static final long serialVersionUID = 1L;

    /** Message code for localized error messages */
    private final transient VaMessenger<FessMessages> messageCode;

    /**

 * such as configuration errors, initialization failures, or critical runtime issues.
 */
public class FessSystemException extends RuntimeException {

    /** Serial version UID for serialization compatibility */
    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new FessSystemException with the specified detail message and cause.
     *

    protected void testRead() {
        final Map<String, Object> searchBody = new HashMap<>();
        String response = checkGetMethod(searchBody, "").asString();
        final Map<String, Object> res = JsonPath.from(response).getMap("response.setting");
        assertTrue(res.containsKey("total_words_num"));
        assertTrue(res.containsKey("document_words_num"));
        assertTrue(res.containsKey("query_words_num"));

import org.jspecify.annotations.Nullable;

/**
 * Implementation of {@link ImmutableSet} with exactly one element.
 *
 * @author Kevin Bourrillion
 * @author Nick Kralevich
 */
@GwtCompatible
@SuppressWarnings("serial") // uses writeReplace(), not default serialization
final class SingletonImmutableSet<E> extends ImmutableSet<E> {
  // We deliberately avoid caching the asList and hashCode here, to ensure that with

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				}
			}
		}

		wk.Take()
		go func(setIdx int) {
			defer wk.Give()
			err := set.listObjectsToRebalance(ctx, bucket,
				func(entry metaCacheEntry) {
					wk.Take()
					go rebalanceEntry(entry)
				},
			)
			if err == nil || errors.Is(err, context.Canceled) {
				return
			}
			setN := humanize.Ordinal(setIdx + 1)

  private static final int DELAY_MS = 50;
  private static final String RETURN_VALUE = "abc";

  private TimeLimiter timeLimiter;

  @Override
  protected void setUp() throws Exception {
    super.setUp();
    timeLimiter = new FakeTimeLimiter();
  }

  public void testCallWithTimeout_propagatesReturnValue() throws Exception {
    String result =

    assertEquals("get(null) should return the associated value", getValueForNullKey(), get(null));
  }

  public void testGet_wrongType() {
    try {
      assertNull("get(wrongType) should return null or throw", getMap().get(WrongType.VALUE));
    } catch (ClassCastException tolerated) {
    }
  }

import com.google.common.base.Preconditions;
import java.util.Spliterator;

/**
 * Implementation of {@link ImmutableList} with exactly one element.
 *
 * @author Hayward Chan
 */
@GwtCompatible
@SuppressWarnings("serial") // uses writeReplace(), not default serialization
final class SingletonImmutableList<E> extends ImmutableList<E> {

  final transient E element;

  SingletonImmutableList(E element) {