private var closed = false

      override fun close() {
        if (closed) return
        try {
          super.close()
        } finally {
          closedLatch.countDown()
        }
      }
    }.buffer()

  override val sink: BufferedSink =
    object : ForwardingSink(delegate.sink) {
      private var closed = false

      override fun close() {
        if (closed) return
        try {

            return null;
        }).when(mockDcerpcHandle).sendrecv(any(MsrpcLsarClose.class));

        // Close once
        handle.close();

        // Act
        // Try to close again
        handle.close();

        // Assert
        // Verify sendrecv was called once for open and only once for close
        verify(mockDcerpcHandle, times(1)).sendrecv(any(MsrpcLsarOpenPolicy2.class));

        handle.close(); // First close
        handle.close(); // Second close

        // Verify sendrecv for close was called only once
        verify(mockHandle, times(1)).sendrecv(any(MsrpcSamrCloseHandle.class));
    }

    @Test
    void testClose_SmbExceptionOnClose() throws IOException {

  }

  public void testNullCloseable() throws IOException {
    Closer closer = Closer.create();
    closer.register(null);
    closer.close();
  }

  /**
   * Asserts that an exception was thrown when trying to close each of the given throwables and that
   * each such exception was suppressed because of the given thrown exception.
   */
  private void assertSuppressed(Suppression... expected) {

   * <p><b>Java 11+ users:</b> use {@link Writer#nullWriter()} instead. Note that the {@link
   * CharStreams} method returns a singleton writer whose {@code close} method has no effect, while
   * the {@link Writer#nullWriter()} method returns a new instance whose methods throw after the
   * instance is {@link Writer#close() closed}.
   *
   * @since 15.0
   */
  public static Writer nullWriter() {
    return NullWriter.INSTANCE;
  }

            return invocation.getArgument(1);
        });

        // When: Create iterator and close multiple times
        NetServerEnumIterator iterator = new NetServerEnumIterator(parent, treeHandle, "*", 0, null);

        iterator.close();
        iterator.close(); // Second close should be safe

        // Then: Tree handle should be released only once
        verify(treeHandle, times(1)).release();

	}
	w := NewWriter(&buf)
	if _, err := w.CreateHeader(h); err != nil {
		t.Fatalf("unexpected CreateHeader error: %v", err)
	}
	if err := w.Close(); err != nil {
		t.Fatalf("unexpected Close error: %v", err)
	}

	want, err := os.ReadFile("testdata/time-go.zip")
	if err != nil {
		t.Fatalf("unexpected ReadFile error: %v", err)
	}

            executor.shutdown();
        }
    }

    /**
     * Test close() method
     */
    @Test
    void testClose() throws CIFSException {
        // Execute
        watchHandle.close();

        // Verify close was called
        verify(watchHandle, times(1)).close();
    }

    /**
     * Test close() method throwing CIFSException
     */
    @Test

    createNewCache()
  }

  @AfterEach fun tearDown() {
    while (!toClose.isEmpty()) {
      toClose.pop().close()
    }
    taskFaker.close()

    (filesystem.delegate as? FakeFileSystem)?.checkNoOpenFiles()
  }

  @Test
  fun emptyCache() {
    cache.close()
    assertJournalEquals()
  }

  @Test
  fun recoverFromInitializationFailure() {

    void testClose_True() throws CIFSException {
        // Test close() method when true
        when(mockDelegate.close()).thenReturn(true);
        assertTrue(cifsContextWrapper.close());
        verify(mockDelegate).close();
    }

    @Test
    void testClose_False() throws CIFSException {
        // Test close() method when false
        when(mockDelegate.close()).thenReturn(false);