public void testElapsed_notRunning() {
    ticker.advance(1);
    stopwatch.start();
    ticker.advance(4);
    stopwatch.stop();
    ticker.advance(9);
    assertEquals(4, stopwatch.elapsed(NANOSECONDS));
  }

  public void testElapsed_multipleSegments() {
    stopwatch.start();
    ticker.advance(9);
    stopwatch.stop();

    ticker.advance(16);

    stopwatch.start();

     */
    public void setLength(final int length) {
        deferred.length = length;
    }

    /**
     * Advances the buffer index by the specified number of bytes.
     *
     * @param n the number of bytes to advance
     */
    public void advance(final int n) {
        index += n;
        if (index - start > deferred.length) {
            deferred.length = index - start;
        }

type SplitFunc func(data []byte, atEOF bool) (advance int, token []byte, err error)

// Errors returned by Scanner.
var (
	ErrTooLong         = errors.New("bufio.Scanner: token too long")
	ErrNegativeAdvance = errors.New("bufio.Scanner: SplitFunc returns negative advance count")
	ErrAdvanceTooFar   = errors.New("bufio.Scanner: SplitFunc returns advance count beyond input")

    }

    @Test
    void testAdvance() {
        ndrBuffer.advance(10);
        assertEquals(10, ndrBuffer.getIndex());
        assertEquals(10, ndrBuffer.getLength());

        ndrBuffer.advance(5);
        assertEquals(15, ndrBuffer.getIndex());
        assertEquals(15, ndrBuffer.getLength());

        // Advance past current length
        ndrBuffer.setLength(10);
        ndrBuffer.setIndex(10);

     */
    public void setLength(final int length) {
        this.deferred.length = length;
    }

    /**
     * Advances the buffer index by the specified number of bytes.
     *
     * @param n the number of bytes to advance
     */
    public void advance(final int n) {
        this.index += n;
        if (this.index - this.start > this.deferred.length) {

            final int _identifier_authoritys = 6;
            final int _identifier_authorityi = _dst.index;
            _dst.advance(1 * _identifier_authoritys);
            final int _sub_authorityi = _dst.index;
            _dst.advance(4 * _sub_authoritys);

            _dst = _dst.derive(_identifier_authorityi);
            for (int _i = 0; _i < _identifier_authoritys; _i++) {

    // 4 expires
    ticker.advance(1, MILLISECONDS);
    assertThat(keySet).containsExactly(6, 8, 0, 1, 2, 5, 7, 9);
    ticker.advance(1, MILLISECONDS);
    assertThat(keySet).containsExactly(6, 8, 0, 1, 2, 5, 7, 9);

    // 6 expires
    ticker.advance(1, MILLISECONDS);
    assertThat(keySet).containsExactly(8, 0, 1, 2, 5, 7, 9);
    ticker.advance(1, MILLISECONDS);

    cache.put(0, 10);
    cache.put(2, 30);

    fakeTicker.advance(999, MILLISECONDS);
    assertEquals(Integer.valueOf(30), cache.getIfPresent(2));
    fakeTicker.advance(1, MILLISECONDS);
    assertEquals(Integer.valueOf(30), cache.getIfPresent(2));
    fakeTicker.advance(1000, MILLISECONDS);
    assertEquals(null, cache.getIfPresent(0));
  }

  public void testExpireAfterWrite() {

                _dst.enc_ndr_long(_name_buffers);
                _dst.enc_ndr_long(0);
                _dst.enc_ndr_long(_name_bufferl);
                final int _name_bufferi = _dst.index;
                _dst.advance(2 * _name_bufferl);

                _dst = _dst.derive(_name_bufferi);
                for (int _i = 0; _i < _name_bufferl; _i++) {
                    _dst.enc_ndr_short(this.name.buffer[_i]);
                }

            if (this.s != null) {
                _dst = _dst.deferred;
                final int _ss = this.count;
                _dst.enc_ndr_long(_ss);
                final int _si = _dst.index;
                _dst.advance(4 * _ss);

                _dst = _dst.derive(_si);
                for (int _i = 0; _i < _ss; _i++) {
                    this.s[_i].encode(_dst);
                }
            }
        }