* single "stop" control is required to interrupt or turn off ancillary devices, DC4 is the
   * preferred assignment.)
   *
   * @since 8.0
   */
  public static final byte DC3 = 19; // aka XOFF

  /**
   * Transmission off. See {@link #XON} for explanation.
   *
   * @since 8.0
   */
  public static final byte XOFF = 19; // aka DC3

  /**

            lines.add(line + end);
          }
        };
    char[] chars = input.toCharArray();
    int off = 0;
    while (off < chars.length) {
      int len = Math.min(chars.length, off + chunk) - off;
      lineBuf.add(chars, off, len);
      off += len;
    }
    lineBuf.finish();
    return lines;
  }

    flush(); // flush write to TestOutputStream to get its behavior
  }

  @Override
  public void write(char[] cbuf, int off, int len) throws IOException {
    super.write(cbuf, off, len);
    flush();
  }

  @Override
  public void write(String str, int off, int len) throws IOException {
    super.write(str, off, len);
    flush();
  }

  public boolean closed() {
    return out.closed();
  }

        super.write(c);
        flush();
      }

      @Override
      public void write(char[] cbuf, int off, int len) throws IOException {
        super.write(cbuf, off, len);
        flush();
      }

      @Override
      public void write(String str, int off, int len) throws IOException {
        super.write(str, off, len);
        flush();
      }
    };
  }

      // if expected.length == 0, off has to be 0 but length doesn't matter--result will be empty
      int off = expected.length == 0 ? 0 : random.nextInt(expected.length);
      int len = expected.length == 0 ? 4 : random.nextInt(expected.length - off);

      ByteSourceFactory sliced = SourceSinkFactories.asSlicedByteSourceFactory(factory, off, len);

   *
   * @param bytes the input buffer
   * @param off the offset in the buffer of the first byte to read
   * @param len the number of bytes to read from the buffer
   */
  public static boolean isWellFormed(byte[] bytes, int off, int len) {
    int end = off + len;
    checkPositionIndexes(off, end, bytes.length);
    // Look for the first non-ASCII character.
    for (int i = off; i < end; i++) {
      if (bytes[i] < 0) {

    testThreshold(1000, 100, false, true);
  }

  static void write(OutputStream out, byte[] b, int off, int len, boolean singleByte)
      throws IOException {
    if (singleByte) {
      for (int i = off; i < off + len; i++) {
        out.write(b[i]);
      }
    } else {
      out.write(b, off, len);
    }
    out.flush(); // for coverage
  }

    }

    @Override
    protected void update(byte b) {
      checkNotDone();
      digest.update(b);
    }

    @Override
    protected void update(byte[] b, int off, int len) {
      checkNotDone();
      digest.update(b, off, len);
    }

    @Override
    protected void update(ByteBuffer bytes) {
      checkNotDone();
      digest.update(bytes);
    }

    private void checkNotDone() {

          public Range<K> get(int index) {
            checkElementIndex(index, len);
            if (index == 0 || index == len - 1) {
              return ranges.get(index + off).intersection(range);
            } else {
              return ranges.get(index + off);
            }
          }

          @Override
          boolean isPartialView() {
            return true;
          }

@GwtIncompatible
@ElementTypesAreNonnullByDefault
public interface ByteArrayDataOutput extends DataOutput {
  @Override
  void write(int b);

  @Override
  void write(byte b[]);

  @Override
  void write(byte b[], int off, int len);

  @Override
  void writeBoolean(boolean v);

  @Override
  void writeByte(int v);

  @Override
  void writeShort(int v);

  @Override
  void writeChar(int v);

  @Override