throw new IllegalStateException("SigningDigest is closed");
            }

            // zero out signature field
            final int index = offset + SIGNATURE_OFFSET;
            for (int i = 0; i < SIGNATURE_LENGTH; i++) {
                data[index + i] = 0;
            }

            // set signed flag
            final int oldFlags = SMBUtil.readInt4(data, offset + 16);

  final transient E element;

  SingletonImmutableList(E element) {
    this.element = checkNotNull(element);
  }

  @Override
  public E get(int index) {
    Preconditions.checkElementIndex(index, 1);
    return element;
  }

  @Override
  public UnmodifiableIterator<E> iterator() {
    return singletonIterator(element);
  }

  @Override

  }

  @Override
  public ImmutableSortedSet<E> elementSet() {
    return forward.elementSet().descendingSet();
  }

  @Override
  Entry<E> getEntry(int index) {
    return forward.entrySet().asList().reverse().get(index);
  }

  @Override
  public ImmutableSortedMultiset<E> descendingMultiset() {
    return forward;
  }

  @Override

 * This class manages the process of updating the search index with documents from
 * data stores, including bulk operations, document transformation, and error handling.
 */
public class IndexUpdateCallbackImpl implements IndexUpdateCallback {
    private static final Logger logger = LogManager.getLogger(IndexUpdateCallbackImpl.class);

    /**
     * Default constructor for index update callback implementation.

        this.rdmaCapable = false;
    }

    /**
     * Get the interface index
     *
     * @return interface index
     */
    public int getInterfaceIndex() {
        return interfaceIndex;
    }

    /**
     * Set the interface index
     *
     * @param interfaceIndex interface index
     */
    public void setInterfaceIndex(int interfaceIndex) {

  }

  @Override
  public ImmutableSortedSet<E> elementSet() {
    return forward.elementSet().descendingSet();
  }

  @Override
  Entry<E> getEntry(int index) {
    return forward.entrySet().asList().reverse().get(index);
  }

  @Override
  public ImmutableSortedMultiset<E> descendingMultiset() {
    return forward;
  }

  @Override

    extends UnmodifiableListIterator<E> {
  private final int size;
  private int position;

  /** Returns the element with the specified index. This method is called by {@link #next()}. */
  @ParametricNullness
  protected abstract E get(int index);

  /**
   * Constructs an iterator across a sequence of the given size whose initial position is 0. That

    assertThat(expected).hasMessageThat().isEqualTo("index (-1) must not be negative");
  }

  public void testCheckElementIndex_tooHigh() {
    IndexOutOfBoundsException expected =
        assertThrows(IndexOutOfBoundsException.class, () -> checkElementIndex(1, 1));
    assertThat(expected).hasMessageThat().isEqualTo("index (1) must be less than size (1)");
  }

    assertThat(expected).hasMessageThat().isEqualTo("index (-1) must not be negative");
  }

  public void testCheckElementIndex_tooHigh() {
    IndexOutOfBoundsException expected =
        assertThrows(IndexOutOfBoundsException.class, () -> checkElementIndex(1, 1));
    assertThat(expected).hasMessageThat().isEqualTo("index (1) must be less than size (1)");
  }

import org.apache.lucene.index.Term;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.search.WildcardQuery;
import org.codelibs.fess.Constants;
import org.codelibs.fess.entity.QueryContext;
import org.codelibs.fess.exception.InvalidQueryException;

import org.codelibs.fess.util.ComponentUtil;
import org.opensearch.index.query.QueryBuilder;