public <S extends Comparable<?>> Ordering<S> reverse() {
    return (Ordering<S>) ReverseNaturalOrdering.INSTANCE;
  }

  // preserving singleton-ness gives equals()/hashCode() for free
  private Object readResolve() {
    return INSTANCE;
  }

  @Override
  public String toString() {
    return "Ordering.natural()";
  }

  private NaturalOrdering() {}

}

// Contains checks if a key is in the cache, without updating the recent-ness
// or deleting it for being stale.
func (c *LRU[K, V]) Contains(key K) (ok bool) {
	c.mu.Lock()
	defer c.mu.Unlock()
	_, ok = c.items[key]
	return ok
}

// Peek returns the key value (or undefined if not found) without updating
// the "recently used"-ness of the key.
func (c *LRU[K, V]) Peek(key K) (value V, ok bool) {
	c.mu.Lock()

        ASN1EncodableVector v = new ASN1EncodableVector();
        v.add(new DERTaggedObject(true, 0, new ASN1Integer(badPvno))); // wrong pvno
        v.add(new DERTaggedObject(true, 1, new ASN1Integer(Integer.parseInt(KerberosConstants.KERBEROS_AP_REQ))));
        v.add(new DERTaggedObject(true, 2, new DERBitString(new byte[] { 0x00 })));
        ASN1Sequence seq = new DERSequence(v);

        // Act + Assert

        void testEncodeSizeConsistency() {
            // Given
            byte[] sourceKey = new byte[SOURCE_KEY_SIZE];
            Arrays.fill(sourceKey, (byte) 0x55);

            SrvCopychunk[] testCases = { new SrvCopychunk(1, 2, 3), new SrvCopychunk(4, 5, 6), new SrvCopychunk(7, 8, 9),
                    new SrvCopychunk(10, 11, 12), new SrvCopychunk(13, 14, 15) };

        try {
            // Create a new QueryProcessor and initialize it
            QueryProcessor newQueryProcessor = new QueryProcessor();
            newQueryProcessor.init();
            ComponentUtil.register(newQueryProcessor, "queryProcessor");

            // Register the command with the new processor
            PrefixQueryCommand newCommand = new PrefixQueryCommand();
            newCommand.register();

	// ErrUnsupportedDriver unsupported driver
	ErrUnsupportedDriver = errors.New("unsupported driver")
	// ErrRegistered registered
	ErrRegistered = errors.New("registered")
	// ErrInvalidField invalid field
	ErrInvalidField = errors.New("invalid field")
	// ErrEmptySlice empty slice found
	ErrEmptySlice = errors.New("empty slice found")
	// ErrDryRunModeUnsupported dry run mode unsupported

                    Arguments.of(new int[0], 4), // size() returns 4 for empty array
                    Arguments.of(new int[] { 1 }, 4 + 2), // size() returns 4 + 2*1
                    Arguments.of(new int[] { 1, 2 }, 4 + 4), // size() returns 4 + 2*2
                    Arguments.of(new int[] { 1, 2, 3, 4, 5 }, 4 + 10) // size() returns 4 + 2*5
            );
        }

                new SessionRequestPacket(mockConfig, new TestNetbiosName("SERVER", 0x20, null), new TestNetbiosName("CLIENT", 0x00, null));

        byte[] buffer = new byte[256];
        int written = writePacket.writeTrailerWireFormat(buffer, 0);

        ByteArrayInputStream bais = new ByteArrayInputStream(buffer, 0, written);
        SessionRequestPacket readPacket = new SessionRequestPacket(mockConfig);

        // Test various file ID sizes
        byte[] shortFileId = new byte[8];
        byte[] standardFileId = new byte[16];
        byte[] longFileId = new byte[32];

        new SecureRandom().nextBytes(shortFileId);
        new SecureRandom().nextBytes(standardFileId);
        new SecureRandom().nextBytes(longFileId);

        RequestWithFileId request = new Smb2CloseRequest(mockConfig, emptyFileId);

        assertArrays(new String[] { "ja" }, fessConfig.normalizeQueryLanguages(new String[] { "ja" }));
        assertArrays(new String[] { "ja" }, fessConfig.normalizeQueryLanguages(new String[] { "ja", "ja" }));
        assertArrays(new String[] { "ja" }, fessConfig.normalizeQueryLanguages(new String[] { "ja-jp" }));
        assertArrays(new String[] { "ja" }, fessConfig.normalizeQueryLanguages(new String[] { "ja_JP" }));