/**
         * Applies the given function to a stream created by the supplier and returns the result.
         * The stream is automatically closed after the function is applied.
         *
         * @param <R> The type of the result returned by the function.
         * @param stream A function that processes the stream and produces a result.
         * @return The result produced by applying the function to the stream.
         */

        // When
        FileEntry[] entries = dfsRootEnum.getEntries();

        // Then
        assertNotNull(entries, "The returned entries array should not be null.");
        assertEquals(2, entries.length, "The number of entries should be correct.");

        // The getEntries method returns FileEntry objects. We can check their names.

// `len`. The format is subject to change in the future.
// The returned string is heap-allocated, and caller should call free() on it.
//
// Do not return const char*, because some foreign language binding
// (e.g. swift) cannot then call free() on the returned pointer.
TF_CAPI_EXPORT extern char* TF_FunctionDebugString(TF_Function* func,
                                                   size_t* len);

 *       {@code AsyncCallable}) to complete, without interrupting it (and without calling {@code
 *       cancel} on the {@code Future}). So beware: <i>Even if you cancel every preceding {@code
 *       Future} returned by this class, the next task may still have to wait.</i>.
 *   <li>Once an {@code AsyncCallable} returns a {@code Future}, this class considers that task to

        // Verify that empty optional is returned
        assertNotNull(result);
        assertFalse(result.isPresent());
    }

    // Test getRequestedTimeZone() method
    public void test_getRequestedTimeZone() {
        // Execute
        TimeZone result = provider.getRequestedTimeZone(requestManager);

        // Verify that the central time zone is returned
        assertNotNull(result);

func convPartErrToInt(err error) int {
	err = unwrapAll(err)
	switch err {
	case nil:
		return checkPartSuccess
	case errFileNotFound, errFileVersionNotFound:
		return checkPartFileNotFound
	case errFileCorrupt:
		return checkPartFileCorrupt
	case errVolumeNotFound:
		return checkPartVolumeNotFound
	case errDiskNotFound:
		return checkPartDiskNotFound
	default:

    monitor.enter();
    try {
      return q.toArray();
    } finally {
      monitor.leave();
    }
  }

  /**
   * Returns an array containing all of the elements in this queue; the runtime type of the returned
   * array is that of the specified array. The returned array elements are in no particular order.
   * If the queue fits in the specified array, it is returned therein. Otherwise, a new array is

  @Override
  public int size() {
    return size;
  }

  @Override
  public boolean isEmpty() {
    return head == null;
  }

  @Override
  public boolean containsKey(@Nullable Object key) {
    return keyToKeyList.containsKey(key);
  }

  @Override
  public boolean containsValue(@Nullable Object value) {
    return values().contains(value);
  }

    @Override
    public boolean hasNext() {
      return !nextElements.isEmpty();
    }

    @Override
    public boolean hasPrevious() {
      return !previousElements.isEmpty();
    }

    @Override
    public E next() {
      return transferElement(nextElements, previousElements);
    }

    @Override
    public int nextIndex() {
      return previousElements.size();
    }

    @Override

    public static Object get(final String key) {
        return prp.get(key);
    }

    /**
     * Retrieve a <code>String</code>. If the key cannot be found,
     * the provided <code>def</code> default parameter will be returned.
     *
     * @param key the property key to look up
     * @param def the default value to return if the property is not found
     * @return the property value, or the default value if not found
     */