checkNotClosed();
    // tricky: append takes start, end pair...
    target.append(str, off, off + len);
  }

  @Override
  public void flush() throws IOException {
    checkNotClosed();
    if (target instanceof Flushable) {
      ((Flushable) target).flush();
    }
  }

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

/**
 * SMB2 Flush request message.
 *
 * This command is used to flush buffered data to the
 * underlying storage device for a given file handle.
 *
 * @author mbechler
 */
public class Smb2FlushRequest extends ServerMessageBlock2Request<Smb2FlushResponse> implements RequestWithFileId {

    private byte[] fileId;

    /**
     * Constructs an SMB2 flush request

        }
    }

    /**
     * Flushes the {@link OutputStream}.
     *
     * @param out the output stream
     */
    public static void flush(final OutputStream out) {
        if (out == null) {
            return;
        }
        try {
            out.flush();
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

      "Trailers cannot be read because the state is $state"
    }
    return trailers
  }

  override fun flushRequest() {
    socket.sink.flush()
  }

  override fun finishRequest() {
    socket.sink.flush()
  }

  /** Returns bytes of a request header for sending on an HTTP transport. */
  fun writeRequest(
    headers: Headers,
    requestLine: String,
  ) {

    return CharBuffer.allocate(DEFAULT_BUF_SIZE);
  }

  private CharStreams() {}

  /**
   * Copies all characters between the {@link Readable} and {@link Appendable} objects. Does not
   * close or flush either object.
   *
   * @param from the object to read from
   * @param to the object to write to
   * @return the number of characters copied
   * @throws IOException if an I/O error occurs
   */

        LogStream instance = LogStream.getInstance();
        assertNotNull(instance);

        // Write something to verify it uses our test stream
        instance.println("test message");
        instance.flush();
        String output = testOutput.toString();
        assertTrue(output.contains("test message"));
    }

    @Test
    void testSetInstanceMultipleTimes() {
        // Test setting instance multiple times

  private val minimumDeflateSize: Long,
) : Closeable {
  /** This holds outbound data for compression and masking. */
  private val messageBuffer = Buffer()

  /** The [Buffer] of [sink]. Write to this and then flush/emit [sink]. */
  private val sinkBuffer: Buffer = sink.buffer
  private var writerClosed = false

  /** Lazily initialized on first use. */
  private var messageDeflater: MessageDeflater? = null

				return
			}
			grid.PutByteBuffer(entry)
			if len(traceCh) == 0 {
				// Flush if nothing is queued
				xhttp.Flush(w)
			}
		case <-keepAliveTicker.C:
			if len(traceCh) > 0 {
				continue
			}
			if _, err := w.Write([]byte(" ")); err != nil {
				return
			}
			xhttp.Flush(w)
		case <-ctx.Done():
			return
		}
	}
}

import jcifs.internal.util.SMBUtil;

/**
 * SMB2 Flush response message.
 *
 * This response confirms that buffered data has been
 * successfully flushed to the storage device.
 *
 * @author mbechler
 */
public class Smb2FlushResponse extends ServerMessageBlock2Response {

    /**
     * Constructs an SMB2 flush response
     * @param config the client configuration
     */

        public void close() throws IOException {
            stream.close();
            collector.close();
        }

        @Override
        public void flush() throws IOException {
            stream.flush();
            collector.flush();
        }

        @Override
        public void write(final byte[] b) throws IOException {
            stream.write(b);
            collector.write(b);
        }