* won't be cleared as long as the enum constant is referenced somewhere, and the enum constant
     * is referenced somewhere for as long as the enum class is loaded. *Maybe in theory* the enum
     * class could be unloaded after the above call to `getEnumConstants` but before we call
     * `get()`, but that is vanishingly unlikely.
     */
    return ref == null ? Optional.absent() : Optional.fromNullable(enumClass.cast(ref.get()));
  }

        long initialTime = registration.getLastHeartbeat();

        Thread.sleep(50); // Ensure sufficient time difference
        registration.updateHeartbeat();

        // After update, should not be expired with long timeout
        assertFalse(registration.isExpired(60000));

        // Verify heartbeat was actually updated
        assertTrue(registration.getLastHeartbeat() > initialTime);
    }

            fileIdField.setAccessible(true);
            assertArrayEquals(fileId2, (byte[]) fileIdField.get(notification));
        }

        @Test
        @DisplayName("Should maintain state after successful read")
        void testStateMaintenanceAfterRead() throws Exception {
            byte oplockLevel = 0x02;
            byte[] fileId = createTestData(16);

    }

    /**
     * Uploads a file to the storage system.
     *
     * @param form the item form containing file and path information
     * @return HTML response redirecting to the storage list after upload
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse upload(final ItemForm form) {
        validate(form, messages -> {}, () -> asListHtml(form.path));
        if (form.uploadFile == null) {

    }
    server
      .url("/b")
      .toUrl()
      .openConnection()
      .getInputStream() // Should succeed.
  }

  /**
   * Throttle the request body by sleeping 500ms after every 3 bytes. With a 6-byte request, this
   * should yield one sleep for a total delay of 500ms.
   */
  @Test
  fun throttleRequest() {
    assumeNotWindows()
    server.enqueue(
      MockResponse()

        pairs.add(flags2);

        assertEquals(3, pairs.size(), "Should start with 3 pairs");

        AvPairs.remove(pairs, AvPair.MsvAvFlags);

        assertEquals(1, pairs.size(), "Should have 1 pair after removal");
        assertFalse(AvPairs.contains(pairs, AvPair.MsvAvFlags), "Should not contain MsvAvFlags");
        assertTrue(AvPairs.contains(pairs, AvPair.MsvAvTimestamp), "Should still contain MsvAvTimestamp");
    }

	MetadataOnly bool     `msg:"mo"`           // Read as XL meta and truncate data.
	AbortOn404   bool     `msg:"ab"`           // Stop reading after first file not found.
	MaxResults   int      `msg:"mr"`           // Stop after this many successful results. <= 0 means all.
}

// ReadMultipleResp contains a single response from a ReadMultipleReq.
type ReadMultipleResp struct {

import java.util.Collection;
import java.util.Iterator;
import org.jspecify.annotations.Nullable;

/**
 * An implementation of {@code Iterable} which throws an exception on all invocations of the {@link
 * #iterator()} method after the first, and whose iterator is always unmodifiable.
 *
 * <p>The {@code Iterable} specification does not make it absolutely clear what should happen on a
 * second invocation, so implementors have made various choices, including:

 *       annotations that {@code ParametricNullness} was counteracting.
 * </ul>
 *
 * <p>This annotation is a temporary hack. We will remove it after <a
 * href="https://github.com/google/guava/issues/6126#issuecomment-1203145963">tools no longer need
 * it</a>.
 */
@GwtCompatible
@Retention(CLASS)
@Target({FIELD, METHOD, PARAMETER})

    protected void update(ByteBuffer bytes) {
      checkNotDone();
      checkNotNull(bytes);
      mac.update(bytes);
    }

    private void checkNotDone() {
      checkState(!done, "Cannot re-use a Hasher after calling hash() on it");
    }

    @Override
    public HashCode hash() {
      checkNotDone();
      done = true;
      return HashCode.fromBytesNoCopy(mac.doFinal());
    }
  }