EnumHashBiMap<Currency, Country> bimap2 = EnumHashBiMap.create(emptyBimap2);
    assertTrue(bimap2.isEmpty());
  }

  public void testEnumHashBiMapConstructor() {
    /* Test that it copies existing entries. */
    EnumHashBiMap<Currency, String> bimap1 = EnumHashBiMap.create(Currency.class);
    bimap1.put(Currency.DOLLAR, "dollar");
    EnumHashBiMap<Currency, String> bimap2 = EnumHashBiMap.create(bimap1);

   * (used as the reference iterator) against a {@code PeekingIterator} that *wraps* such an
   * iterator (used as the target iterator).
   *
   * <p>This IteratorTester makes copies of the master so that it can later verify that {@link
   * PeekingIterator#remove()} removes the same elements as the reference's iterator {@code
   * remove()}.
   */

  static void checkCast(Class<?> clazz, Object obj) {}

  static <T> T[] clone(T[] array) {
    return (T[]) Arrays.copyOfRange(array, 0, array.length);
  }

  // TODO: Consolidate different copies in one single place.
  static String format(String template, Object... args) {
    // start substituting the arguments into the '%s' placeholders
    StringBuilder builder = new StringBuilder(template.length() + 16 * args.length);

        for (int i = 0; i < n; i++) {
            a[i] = (byte) i;
        }
        return a;
    }

    @ParameterizedTest
    @MethodSource("byteEncodableArgs")
    @DisplayName("encode() copies bytes correctly and returns size")
    void encodeCopiesAndReportsSize(byte[] src, int off, int len, int dstIndex) {
        Encodable enc = new ByteEncodable(src, off, len);

   *       via madvise(2), but that obviously doesn't exist in java.
   *   <li>Ordinary copy. Kernel copies bytes into a kernel buffer, from a kernel buffer into a
   *       userspace buffer (byte[] or ByteBuffer), then copies them from that buffer into the
   *       destination channel.
   * </ol>
   *

          <!-- We add the link ourselves so that we can choose Java 25 over the version that -source suggests. -->
          <detectJavaApiLink>false</detectJavaApiLink>
          <offlineLinks>

            guid[i] = (byte) i;
        }

        // Call the method
        int bytesRead = response.readBytesWireFormat(guid, 0);

        // Assertions
        // When CAP_EXTENDED_SECURITY is set, it only copies GUID but doesn't update bufferIndex
        assertEquals(0, bytesRead);
        assertArrayEquals(guid, serverData.guid);
        assertEquals("", serverData.oemDomainName);
    }

    @Test

            return true;
          }

          @Override
          public List<String> getResult() {
            return result;
          }
        });
  }

  /**
   * Copies all bytes from a URL to an output stream.
   *
   * @param from the URL to read from
   * @param to the output stream
   * @throws IOException if an I/O error occurs
   */

          <!-- We add the link ourselves so that we can choose Java 25 over the version that -source suggests. -->
          <detectJavaApiLink>false</detectJavaApiLink>
          <offlineLinks>

        assertTrue(ex.getMessage().contains("Refreshing credentials is not supported"));
    }

    @Test
    @DisplayName("clone: copies all relevant fields")
    void clone_copiesFields() {
        Subject subj = new Subject();
        Kerb5Authenticator auth = new Kerb5Authenticator(subj, "DOM", "user", "pass");
        auth.setUser("alice");