}

var errUnreadByte = errors.New("bytes.Buffer: UnreadByte: previous operation was not a successful read")

// UnreadByte unreads the last byte returned by the most recent successful
// read operation that read at least one byte. If a write has happened since
// the last read, if the last read returned an error, or if the read read zero
// bytes, UnreadByte returns an error.
func (b *Buffer) UnreadByte() error {

}

func (r *checksumReader) Read(b []byte) (n int, err error) {
	if r.err != nil {
		return 0, r.err
	}
	n, err = r.rc.Read(b)
	r.hash.Write(b[:n])
	r.nread += uint64(n)
	if r.nread > r.f.UncompressedSize64 {
		return 0, ErrFormat
	}
	if err == nil {
		return
	}
	if err == io.EOF {
		if r.nread != r.f.UncompressedSize64 {
			return 0, io.ErrUnexpectedEOF
		}

	buf := make([]byte, 1)
	if _, err := b.Read(nil); err != nil {
		t.Fatalf("1st nil Read = %v; want nil", err)
	}
	if _, err := b.Read(buf); err != errFake {
		t.Fatalf("1st Read = %v; want errFake", err)
	}
	if _, err := b.Read(nil); err != nil {
		t.Fatalf("2nd nil Read = %v; want nil", err)
	}
	if _, err := b.Read(buf); err != nil {
		t.Fatalf("3rd Read with buffer = %v; want nil", err)
	}

	// Figure out largest value of total_drives_in_erasure_set which results
	// in least number of total_drives/total_drives_erasure_set ratio.
	prevD := divisibleSize / setCounts[0]
	for _, cnt := range setCounts {
		if divisibleSize%cnt == 0 {
			d := divisibleSize / cnt
			if d <= prevD {
				prevD = d
				setSize = cnt
			}
		}
	}
	return setSize
}

// possibleSetCountsWithSymmetry returns symmetrical setCounts based on the

    assertEquals(0, ticker.read());
    assertEquals(10, ticker.read());
    assertEquals(20, ticker.read());
  }

  public void testAutoIncrementStep_millis() {
    FakeTicker ticker = new FakeTicker().setAutoIncrementStep(1, MILLISECONDS);
    assertEquals(0, ticker.read());
    assertEquals(1000000, ticker.read());
    assertEquals(2000000, ticker.read());
  }

        return super.read(reader);
    }

    @Override
    public Model read(InputStream in, boolean strict, InputSource source) throws IOException, XmlPullParserException {
        return super.read(in, strict, source);
    }

    @Override
    public Model read(InputStream in, boolean strict) throws IOException, XmlPullParserException {
        return super.read(in, strict);
    }

    @Override

     */
    public Metadata read(Reader reader) throws IOException, XmlPullParserException {
        try {
            return new Metadata(delegate.read(reader));
        } catch (XMLStreamException e) {
            throw new XmlPullParserException(e.getMessage(), null, e);
        }
    }

    /**
     * Method read.
     *
     * @param in     a in object.
     * @param strict a strict object.

                WebSocket.

                Read more about it in the
                [FastAPI docs for WebSockets](https://fastapi.tiangolo.com/advanced/websockets/).
                """
            ),
        ] = None,
    ) -> Callable[[DecoratedCallable], DecoratedCallable]:
        """
        Decorate a WebSocket function.

        Read more about it in the

            return modelReader.read(pomFile, options).getDelegate();
        } else if (input != null) {
            return modelReader.read(input, options).getDelegate();
        } else {
            return modelReader.read(reader, options).getDelegate();
        }
    }

    @Deprecated
    @Override
    public org.apache.maven.model.Model read(File file, Map<String, ?> options) throws IOException {

     * any.
     * @return Model
     */
    public Model read(Reader reader) throws IOException, XmlPullParserException {
        return read(reader, true);
    } // -- Model read( Reader )

    protected Model read(InputStream is, boolean strict, InputSource source)
            throws IOException, XmlPullParserException {
        try {
            org.apache.maven.api.model.Model model =