// When the returned WriteCloser is closed, it will wait for all data to be read before returning.
func (r *RingBuffer) WriteCloser() io.WriteCloser {
	return &writeCloser{RingBuffer: r}
}

type writeCloser struct {
	*RingBuffer
}

// Close provides a close method for the WriteCloser.
func (wc *writeCloser) Close() error {
	wc.CloseWriter()
	return wc.Flush()

    }

    @Test
    @DisplayName("Test initial state is CLOSED")
    void testInitialState() {
        assertEquals(SimpleCircuitBreaker.State.CLOSED, circuitBreaker.getState());
        assertTrue(circuitBreaker.allowsRequests());
    }

    @Test
    @DisplayName("Test successful calls in CLOSED state")
    void testSuccessfulCalls() throws Exception {

        .bodyDelay(1, TimeUnit.SECONDS)
        .body(protocol, "Hello")
        .build(),
    )

    val call = client.newCall(Request(server.url("/")))
    call.execute().use { response ->
      response.close()
      assertFailsWith<IOException> {
        response.trailers()
      }
    }
  }

  @Test
  fun readTrailersAfterEarlyEofAndCloseHttp1() {
    readTrailersAfterEarlyEofAndClose(Protocol.HTTP_1_1)

    checkNotClosed();
    if (target instanceof Flushable) {
      ((Flushable) target).flush();
    }
  }

  @Override
  public void close() throws IOException {
    this.closed = true;
    if (target instanceof Closeable) {
      ((Closeable) target).close();
    }
  }

  @Override
  public Writer append(char c) throws IOException {
    checkNotClosed();
    target.append(c);
    return this;

        else -> throw EOFException() // We ran out of data before we found the required boundary.
      }
    }

    @Throws(IOException::class)
    override fun close() {
      if (closed) return
      closed = true
      currentPart = null
      source.close()
    }

    /** A single part in a multipart body. */
    class Part(
      @get:JvmName("headers") val headers: Headers,

    }

    @Test
    @DisplayName("close calls release and decrements usage; double release throws")
    void closeAndReleaseBehavior() {
        // Validates usage counting and that an extra release() throws RuntimeCIFSException
        // First close -> usage 1 -> 0, triggers treeConnection.release()
        handle.close();
        verify(treeConnection, times(1)).release();

        InOrder inOrder = inOrder(handle, fd, tree);
        inOrder.verify(handle, times(1)).ensureOpen();
        inOrder.verify(fd, times(1)).getTree();
        inOrder.verify(tree, times(1)).send(any(Smb2IoctlRequest.class), eq(RequestParam.NO_RETRY));
        verify(fd, times(1)).close();
        verify(tree, times(1)).close();
    }

    @ParameterizedTest

        return false;
    }

    /**
     * {@inheritDoc}
     *
     *
     * @see jcifs.CIFSContext#close()
     */
    @Override
    public boolean close() throws CIFSException {
        if (!this.closed) {
            Runtime.getRuntime().removeShutdownHook(this);
        }
        return false;
    }

    /**
     * {@inheritDoc}
     *

     * @see Closeable#close()
     */
    public static void close(final Closeable closeable) {
        if (closeable == null) {
            return;
        }
        try {
            closeable.close();
        } catch (final IOException e) {
            logger.log(format("ECL0017", e.getMessage()), e);
        }
    }

    /**
     * Closes a {@link Closeable} quietly, suppressing any {@link IOException}.
     *

        TestIterator iterator = new TestIterator(null);
        iterator.close();

        verify(delegate).close();
    }

    @Test
    @DisplayName("Close propagates exception")
    void closeException() throws CIFSException {
        when(delegate.hasNext()).thenReturn(false);
        doThrow(new CIFSException("Close failed")).when(delegate).close();

        TestIterator iterator = new TestIterator(null);