// This is actually good security practice - closed authenticators cannot be accessed

        // Verify multiple closes don't cause issues
        auth.close(); // Should be safe to call again
        assertTrue(auth.isClosed());
    }

    /**
     * Test AutoCloseable implementation
     */
    @Test
    @DisplayName("Test AutoCloseable implementation with try-with-resources")

That way, using `secrets.compare_digest()` in your application code, it will be safe against this whole range of security attacks.

### Return the error { #return-the-error }

 */
package jcifs.internal;

import jcifs.CIFSContext;

/**
 * Generic interface for typed SMB request messages.
 * Extends the common request interface with type-safe response handling,
 * allowing requests to specify their expected response type.
 *
 * @author mbechler
 * @param <T> response type
 */

 * used; or if the class exposes a public parameter-less constructor then it will be "new"d and
 * returned.
 *
 * <p>All default instances returned by {@link #get} are generics-safe. Clients won't get type
 * errors for using {@code get(Comparator.class)} as a {@code Comparator<Foo>}, for example.
 * Immutable empty instances are returned for collection types; {@code ""} for string; {@code 0} for

 * method.
 *
 * <p>The {@code standard} methods and any collection views they return are not guaranteed to be
 * thread-safe, even when all of the methods that they depend on are thread-safe.
 *
 * @author Louis Wasserman
 */
public abstract class ForwardingSortedMultiset<E extends @Nullable Object>
    extends ForwardingMultiset<E> implements SortedMultiset<E> {

  }

  ExplicitOrdering(ImmutableMap<T, Integer> rankMap) {
    this.rankMap = rankMap;
  }

  @Override
  public int compare(T left, T right) {
    return rank(left) - rank(right); // safe because both are nonnegative
  }

  private int rank(T value) {
    Integer rank = rankMap.get(value);
    if (rank == null) {
      throw new IncomparableValueException(value);
    }
    return rank;
  }

    /** Map of metadata field names to their corresponding XPath expressions. */
    protected Map<String, String> metadataXpathMap = new HashMap<>();

    /** Thread-local instance of XPathAPI for thread-safe XPath evaluation. */
    private final ThreadLocal<XPathAPI> xpathAPI = new ThreadLocal<>();

    /**
     * Creates a new HtmlExtractor instance.
     */
    public HtmlExtractor() {
        super();
    }

    }
    return false;
  }

  @Override
  @ParametricNullness
  public final T next() {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    state = State.NOT_READY;
    // Safe because hasNext() ensures that tryToComputeNext() has put a T into `next`.
    T result = uncheckedCastNullableTToT(next);
    next = null;
    return result;
  }

  @Override
  public final void remove() {

    /**
     * Open does not cause an opportunistic lock break for the file
     */
    public static final int FILE_NOP_RECALL = 0x400000;
    /**
     * The file is being opened solely to query its free space
     */
    public static final int FILE_OPEN_FOR_FREE_SPACE_QUERY = 0x800000;

    private byte securityFlags;
    private byte requestedOplockLevel = SMB2_OPLOCK_LEVEL_NONE;

  }

  /**
   * Creates a thread-safe set backed by a hash map. The set is backed by a {@link
   * ConcurrentHashMap} instance, and thus carries the same concurrency guarantees.
   *
   * <p>Unlike {@code HashSet}, this class does NOT allow {@code null} to be used as an element. The
   * set is serializable.
   *
   * @return a new, empty thread-safe {@code Set}
   * @since 15.0
   */