void testOriginalMessageSize() {
        // Given
        int messageSize = 1024;

        // When
        transformHeader.setOriginalMessageSize(messageSize);

        // Then
        assertEquals(messageSize, transformHeader.getOriginalMessageSize());
    }

    @Test
    @DisplayName("Should set and get flags")
    void testFlags() {
        // Given
        int flags = 0x0001; // Encrypted flag

   * MD5 (128 hash bits) hash function and the given secret key.
   *
   * <p>If you are designing a new system that needs HMAC, prefer {@link #hmacSha256} or other
   * future-proof algorithms <a
   * href="https://datatracker.ietf.org/doc/html/rfc6151#section-2.3">over {@code hmacMd5}</a>.
   *
   * @param key the secret key
   * @throws IllegalArgumentException if the given key is inappropriate for initializing this MAC

 */
public abstract class FieldUtil {

    /**
     * Do not instantiate.
     */
    protected FieldUtil() {
    }

    /**
     * Returns the value of a {@code static} field represented by the given {@link Field}.
     *
     * @param <T> the type of the field
     * @param field the field (must not be {@literal null})
     * @return the value represented by the {@code static} field

    }

    @Test
    @DisplayName("Constructor should store delegate reference")
    void testConstructorStoresDelegate() {
        // Given
        Configuration testDelegate = mock(Configuration.class);

        // When
        DelegatingConfiguration config = new DelegatingConfiguration(testDelegate);

        // Then

  public static <K, V> ImmutableBiMap<K, V> of(K k1, V v1) {
    checkEntryNotNull(k1, v1);
    return new RegularImmutableBiMap<>(new Object[] {k1, v1}, 1);
  }

  /**
   * Returns an immutable map containing the given entries, in order.
   *
   * @throws IllegalArgumentException if duplicate keys or values are added
   */
  public static <K, V> ImmutableBiMap<K, V> of(K k1, V v1, K k2, V v2) {
    checkEntryNotNull(k1, v1);

   * {@inheritDoc}
   *
   * <p>Because the values for a given key may have duplicates and follow the insertion ordering,
   * this method returns a {@link List}, instead of the {@link java.util.Collection} specified in
   * the {@link Multimap} interface.
   */
  @Override
  List<V> get(@ParametricNullness K key);

  /**
   * {@inheritDoc}
   *
   * <p>Because the values for a given key may have duplicates and follow the insertion ordering,

   * {@inheritDoc}
   *
   * <p>Because the values for a given key may have duplicates and follow the insertion ordering,
   * this method returns a {@link List}, instead of the {@link java.util.Collection} specified in
   * the {@link Multimap} interface.
   */
  @Override
  List<V> get(@ParametricNullness K key);

  /**
   * {@inheritDoc}
   *
   * <p>Because the values for a given key may have duplicates and follow the insertion ordering,

    void testFileBasicInfoSize() {
        // Given
        FileBasicInfo info = new FileBasicInfo();

        // When & Then
        assertEquals(40, info.size());
    }

    @Test
    @DisplayName("Test FileBasicInfo toString method")
    void testFileBasicInfoToString() {
        // Given
        FileBasicInfo info =

        return result;
      }
    };
  }

  /** Returns a {@link CacheLoader} that returns the given {@code constant} for every request. */
  static <K, V> ConstantLoader<K, V> constantLoader(@Nullable V constant) {
    return new ConstantLoader<>(constant);
  }

  /** Returns a {@link CacheLoader} that returns the given {@code constant} for every request. */
  static IncrementingLoader incrementingLoader() {

    }

    @Test
    @DisplayName("BufferCache interface should define correct method signatures")
    void testInterfaceContract() {
        // Given
        BufferCache cache = mockBufferCache;

        // When & Then - verify interface methods exist and can be called
        assertDoesNotThrow(() -> {
            cache.getBuffer();