fileState

	ReadFrom(io.Reader) (int64, error)
}

// Flush finishes writing the current file's block padding.
// The current file must be fully written before Flush can be called.
//
// This is unnecessary as the next call to [Writer.WriteHeader] or [Writer.Close]
// will implicitly flush out the file's padding.
func (tw *Writer) Flush() error {
	if tw.err != nil {
		return tw.err
	}
	if nb := tw.curr.logicalRemaining(); nb > 0 {

        Object result = data.getDataMap().get("list");
        assertNotNull(result);
        assertTrue(result instanceof List);

        // Test Set interface (should use iterator().next())
        Set<BsUser> set = new HashSet<>();
        set.add(entity1);
        set.add(entity2);
        RenderDataUtil.register(data, "set", set);

        Object setResult = data.getDataMap().get("set");

        circuitBreaker.tripBreaker();
        assertEquals(SimpleCircuitBreaker.State.OPEN, circuitBreaker.getState());

        // Wait for timeout
        Thread.sleep(150);

        // Next call should transition to HALF_OPEN
        String result = circuitBreaker.call(() -> "success");
        assertEquals("success", result);
        assertEquals(SimpleCircuitBreaker.State.HALF_OPEN, circuitBreaker.getState());

  public void testEntrySetIteratorRemove() {
    Set<Entry<K, V>> entrySet = getMap().entrySet();
    Iterator<Entry<K, V>> entryItr = entrySet.iterator();
    assertEquals(e0(), entryItr.next());
    entryItr.remove();
    assertTrue(getMap().isEmpty());
    assertFalse(entrySet.contains(e0()));
  }

  public void testContainsEntryWithIncomparableKey() {
    try {

  public void testEntrySetIteratorRemove() {
    Set<Entry<K, V>> entrySet = getMap().entrySet();
    Iterator<Entry<K, V>> entryItr = entrySet.iterator();
    assertEquals(e0(), entryItr.next());
    entryItr.remove();
    assertTrue(getMap().isEmpty());
    assertFalse(entrySet.contains(e0()));
  }

  public void testContainsEntryWithIncomparableKey() {
    try {

              throw new AssertionError(e);
            }
          }

          private void mutateDelegate() {
            allStates.add(ImmutableList.copyOf(delegate));
            remainingActions.next().perform(delegate);
            allStates.add(ImmutableList.copyOf(delegate));
          }
        };

    @SuppressWarnings("unchecked")
    ConcurrentlyMutatedList<Integer> list =

     *
     * @param config the configuration
     * @param fid the file identifier
     * @param offset the file offset to read from
     * @param maxCount the maximum number of bytes to read
     * @param andx the next command in the chain
     */
    public SmbComReadAndX(final Configuration config, final int fid, final long offset, final int maxCount, final ServerMessageBlock andx) {
        super(config, SMB_COM_READ_ANDX, andx);

    }

    // ensures that the number of invocations looks sane
    void assertInvariants(int expectedBytes) {
      // we should have seen as many bytes as the next multiple of chunk after expectedBytes - 1
      assertEquals(out.toByteArray().length, ceilToMultiple(expectedBytes, chunkSize));
      assertEquals(expectedBytes / chunkSize, processCalled);

  @CollectionSize.Require(SEVERAL)
  public void testDescendingNavigation() {
    List<E> descending = new ArrayList<>();
    for (Iterator<E> i = navigableSet.descendingIterator(); i.hasNext(); ) {
      descending.add(i.next());
    }
    Collections.reverse(descending);
    assertEquals(values, descending);
  }

  public void testEmptySubSet() {
    NavigableSet<E> empty = navigableSet.subSet(e0(), false, e0(), false);

        @Override
        public boolean hasNext() {
          return nextOrNull != null;
        }

        @Override
        public Entry<K, V> next() {
          if (nextOrNull == null) {
            throw new NoSuchElementException();
          }
          try {
            return nextOrNull;
          } finally {
            toRemove = nextOrNull;