start := uintptr(unsafe.Pointer(&b.buf[0]))
	b.next = start
	if testSmallBuf {
		// For testing, make the buffer smaller but more than
		// 1 write barrier's worth, so it tests both the
		// immediate flush and delayed flush cases.
		b.end = uintptr(unsafe.Pointer(&b.buf[wbMaxEntriesPerCall+1]))
	} else {
		b.end = start + uintptr(len(b.buf))*unsafe.Sizeof(b.buf[0])
	}

	if (b.end-b.next)%unsafe.Sizeof(b.buf[0]) != 0 {

   *     method
   * @throws IOException if {@code swallowIOException} is false and {@link Flushable#flush} throws
   *     an {@code IOException}.
   * @see Closeables#close
   */
  public static void flush(Flushable flushable, boolean swallowIOException) throws IOException {
    try {
      flushable.flush();
    } catch (IOException e) {
      if (swallowIOException) {

	bufferCh chan *metric
	// if bufferSize is reached, incoming metrics will be discarded.
	bufferSize int
	// how often the recorder runs to flush the metrics.
	interval time.Duration

	// stopCh is used to stop the goroutine which periodically flushes metrics.
	stopCh <-chan struct{}
	// IsStoppedCh indicates whether the goroutine is stopped. It's used in tests only to make sure

    Writer writer = new AppendableWriter(spy);

    writer.write("Hello");
    assertFalse(spy.flushed);
    assertFalse(spy.closed);

    writer.flush();
    assertTrue(spy.flushed);
    assertFalse(spy.closed);

    writer.close();
    assertTrue(spy.flushed);
    assertTrue(spy.closed);
  }

  public void testCloseIsFinal() throws IOException {

}

func (wr outerWithCloseNotifyAndFlush) Flush() {
	if flusher, ok := wr.UserProvidedDecorator.(http.Flusher); ok {
		flusher.Flush()
		return
	}

	wr.InnerCloseNotifierFlusher.Flush()
}

//lint:file-ignore SA1019 Keep supporting deprecated http.CloseNotifier
var _ http.CloseNotifier = outerWithCloseNotifyFlushAndHijack{}
var _ http.Flusher = outerWithCloseNotifyFlushAndHijack{}

   *     method
   * @throws IOException if {@code swallowIOException} is false and {@link Flushable#flush} throws
   *     an {@code IOException}.
   * @see Closeables#close
   */
  public static void flush(Flushable flushable, boolean swallowIOException) throws IOException {
    try {
      flushable.flush();
    } catch (IOException e) {
      if (swallowIOException) {

	counter *counter
}

func (fw *fakeResponseWriterDecorator) Unwrap() http.ResponseWriter { return fw.ResponseWriter }
func (fw *fakeResponseWriterDecorator) Flush() {
	if fw.counter != nil {
		fw.counter.FlushInvoked++
	}
	fw.ResponseWriter.(http.Flusher).Flush()
}
func (fw *fakeResponseWriterDecorator) Hijack() (net.Conn, *bufio.ReadWriter, error) {
	if fw.counter != nil {
		fw.counter.HijackInvoked++
	}

			check(
				hasStatus(200),
				hasContents("hi first"),
				hasFlush(false),
				hasHeader("Content-Type", "text/plain; charset=utf-8"),
			),
		},
		{
			"flush",
			func(w http.ResponseWriter, r *http.Request) {
				w.(http.Flusher).Flush() // also sends a 200
				w.WriteHeader(201)
			},
			check(hasStatus(200), hasFlush(true), hasContentLength(-1)),
		},
		{
			"Content-Type detection",

          .when(mockFlushable)
          .flush();
    }
  }

  // Flush the flushable using the Flushables, passing in the swallowException
  // parameter. expectThrown determines whether we expect an exception to
  // be thrown by Flushables.flush;
  private void doFlush(Flushable flushable, boolean swallowException, boolean expectThrown)
      throws IOException {
    try {
      Flushables.flush(flushable, swallowException);

			if err != nil {
				return
			}
			if len(mergeCh) == 0 {
				// Flush if nothing is queued
				w.(http.Flusher).Flush()
			}
			grid.PutByteBuffer(ev)
		case <-emptyEventTicker:
			if err := enc.Encode(struct{ Records []event.Event }{}); err != nil {
				return
			}
			w.(http.Flusher).Flush()
		case <-keepAliveTicker:
			if _, err := w.Write([]byte(" ")); err != nil {
				return
			}