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();

    // 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);
    assertThat(cache.getIfPresent(2)).isEqualTo(30);
    fakeTicker.advance(1, MILLISECONDS);
    assertThat(cache.getIfPresent(2)).isEqualTo(30);
    fakeTicker.advance(1000, MILLISECONDS);
    assertThat(cache.getIfPresent(0)).isNull();
  }

  @Test

                operation*.

                Read more about it in the
                [FastAPI docs for Path Operation Advanced Configuration](https://fastapi.tiangolo.com/advanced/path-operation-advanced-configuration/#custom-openapi-path-operation-schema).
                """
            ),
        ] = None,
        generate_unique_id_function: Annotated[

            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++) {

  }

  /**
   * Inserts element at current put position, advances, and signals. Call only when occupying
   * monitor.
   */
  private void insert(E x) {
    items[putIndex] = x;
    putIndex = inc(putIndex);
    ++count;
  }

  /**
   * Extracts element at current take position, advances, and signals. Call only when occupying
   * monitor.
   */
  private E extract() {

///

## Advanced User Guide { #advanced-user-guide }

There is also an **Advanced User Guide** that you can read later after this **Tutorial - User guide**.

The **Advanced User Guide** builds on this one, uses the same concepts, and teaches you some extra features.

      ticker.advance(1, MILLISECONDS);
    }

    assertThat(cache.getUnchecked(0)).isEqualTo(0);
    assertThat(cache.getUnchecked(1)).isEqualTo(1);
    assertThat(cache.getUnchecked(2)).isEqualTo(2);
    assertThat(loader.getLoadCount()).isEqualTo(expectedLoads);
    assertThat(loader.getReloadCount()).isEqualTo(expectedReloads);

    // refresh 0
    ticker.advance(1, MILLISECONDS);

    Object four = new Object();
    Object five = new Object();

    map.put(one, two);
    ticker.advance(1);
    map.put(two, three);
    ticker.advance(1);
    map.put(three, four);
    assertThat(listener.isEmpty()).isTrue();
    ticker.advance(1);
    map.put(four, five);
    assertNotified(listener, one, two, RemovalCause.EXPIRED);

    Object four = new Object();
    Object five = new Object();

    map.put(one, two);
    ticker.advance(1);
    map.put(two, three);
    ticker.advance(1);
    map.put(three, four);
    assertThat(listener.isEmpty()).isTrue();
    ticker.advance(1);
    map.put(four, five);
    assertNotified(listener, one, two, RemovalCause.EXPIRED);