* Future} need not be {@linkplain Future#isDone done}, making {@code AsyncFunction} suitable for
   * asynchronous derivations.
   *
   * <p>Throwing an exception from this method is equivalent to returning a failing {@code Future}.
   */
  ListenableFuture<O> apply(@ParametricNullness I input) throws Exception;

		b := *internal32KByteBuffer.Get()
		if cap(b) >= wantSz {
			return b[:0]
		}
		internal32KByteBuffer.Put(&b)
	}
	return make([]byte, 0, wantSz)
}

// PutByteBuffer is for returning byte buffers.
var PutByteBuffer = func(b []byte) {
	if cap(b) >= biggerBufMin && cap(b) < biggerBufMax {
		internal32KByteBuffer.Put(&b)
		return
	}
	if cap(b) >= minBufferSize && cap(b) < biggerBufMin {

// only sqlite, postgres, gaussdb, sqlserver support returning
func TestUpdateReturning(t *testing.T) {
	if DB.Dialector.Name() != "sqlite" && DB.Dialector.Name() != "postgres" && DB.Dialector.Name() != "gaussdb" && DB.Dialector.Name() != "sqlserver" {
		return
	}

	users := []*User{
		GetUser("update-returning-1", Config{}),
		GetUser("update-returning-2", Config{}),
		GetUser("update-returning-3", Config{}),
	}
	DB.Create(&users)

It will use the default status code or the one you set in your *path operation*.

## Additional status codes { #additional-status-codes_1 }

If you want to return additional status codes apart from the main one, you can do that by returning a `Response` directly, like a `JSONResponse`, and set the additional status code directly.

        grid.PutByteBuffer(result)
        return nil
    })
```

Context cancellation and timeouts are propagated to the handler.
The client does not wait for the remote handler to finish before returning.
Returning any error will also cancel the stream remotely.

CAREFUL: When utilizing two-way communication, it is important to ensure that the remote handler is not blocked on a send.

		// not enough data in buffer
		n = avail
		err = b.readErr()
		if err == nil {
			err = ErrBufferFull
		}
	}
	return b.buf[b.r : b.r+n], err
}

// Discard skips the next n bytes, returning the number of bytes discarded.
//
// If Discard skips fewer than n bytes, it also returns an error.
// If 0 <= n <= b.Buffered(), Discard is guaranteed to succeed without
// reading from the underlying io.Reader.

    private int pad;
    private int pad1;
    private boolean parametersDone, dataDone;

    /** Total number of parameter bytes the server is returning */
    protected int totalParameterCount;
    /** Total number of data bytes the server is returning */
    protected int totalDataCount;
    /** Number of parameter bytes in this response */
    protected int parameterCount;

     * that once the Thread returns to the Executor that this Executor composes, the interruption
     * will still be present. If the composed Executor is an ExecutorService, it can respond to
     * shutdown() by returning tasks queued on that Thread after {@link #worker} drains the queue.
     */
    @SuppressWarnings("CatchingUnchecked") // sneaky checked exception
    private void workOnQueue() {
      boolean interruptedDuringTask = false;

     * that once the Thread returns to the Executor that this Executor composes, the interruption
     * will still be present. If the composed Executor is an ExecutorService, it can respond to
     * shutdown() by returning tasks queued on that Thread after {@link #worker} drains the queue.
     */
    @SuppressWarnings("CatchingUnchecked") // sneaky checked exception
    private void workOnQueue() {
      boolean interruptedDuringTask = false;

 * from being scheduled.
 *
 * Tasks may opt-out of cancellation with `cancelable = false`. Such tasks will recur until they
 * decide not to by returning -1L.
 *
 * Task Queues
 * -----------
 *
 * Tasks are bound to the [TaskQueue] they are scheduled in. Each queue is sequential and the tasks