* So, using the multimap shown above as an example, the {@link #size} is {@code 3}, not {@code 2},
 * and the {@link #values} collection is {@code [1, 2, 3]}, not {@code [[1, 2], [3]]}. For those
 * times when the first style is more useful, use the multimap's {@link #asMap} view (or create a
 * {@code Map<K, Collection<V>>} in the first place).
 *
 * <h3>Example</h3>
 *
 * <p>The following code:
 *
 * {@snippet :

* Then **comment** saying that you did that, that's how I will know you really checked it.

/// info

Unfortunately, I can't simply trust PRs that just have several approvals.

Several times it has happened that there are PRs with 3, 5 or more approvals, probably because the description is appealing, but when I check the PRs, they are actually broken, have a bug, or don't solve the problem they claim to solve. 😅

   * nodes. This is an O(n) operation in the common case (and O(n^2) in the worst), but we are saved
   * by two things.
   *
   * <ul>
   *   <li>This is only called when a waiting thread times out or is interrupted. Both of which
   *       should be rare.
   *   <li>The waiters list should be very short.
   * </ul>
   */
  private void removeWaiter(Waiter node) {

        totalKeyRotations.incrementAndGet();
        lastKeyRotationTime.set(System.currentTimeMillis());
    }

    /**
     * Get the current key rotation count
     *
     * @return number of times keys have been rotated
     */
    public int getKeyRotationCount() {
        return rotationCount;
    }

    /**
     * Set the key rotation bytes limit
     *

你會看到自動產生的 API 文件，包含來自所有子模組的路徑，使用正確的路徑（與前綴）與正確的標籤：

<img src="/img/tutorial/bigger-applications/image01.png">

## 以不同的 `prefix` 多次納入同一個 router { #include-the-same-router-multiple-times-with-different-prefix }

你也可以用不同的前綴，對同一個 router 多次呼叫 `.include_router()`。

例如，這對於在不同前綴下提供相同的 API 很有用，如 `/api/v1` 與 `/api/latest`。

這是進階用法，你可能不會需要，但若有需要它就在那裡。

    RateLimiter rateLimiter = new SmoothWarmingUp(stopwatch, warmupPeriod, unit, coldFactor);
    rateLimiter.setRate(permitsPerSecond);
    return rateLimiter;
  }

  /**
   * The underlying timer; used both to measure elapsed time and sleep as necessary. A separate
   * object to facilitate testing.
   */
  private final SleepingStopwatch stopwatch;

<img src="/img/tutorial/bigger-applications/image01.png">

## Den gleichen Router mehrmals mit unterschiedlichem `prefix` inkludieren { #include-the-same-router-multiple-times-with-different-prefix }

Sie können `.include_router()` auch mehrmals mit *demselben* Router und unterschiedlichen Präfixen verwenden.

func TestModTime(t *testing.T) {
	var testTime = time.Date(2009, time.November, 10, 23, 45, 58, 0, time.UTC)
	fh := new(FileHeader)
	fh.SetModTime(testTime)
	outTime := fh.ModTime()
	if !outTime.Equal(testTime) {
		t.Errorf("times don't match: got %s, want %s", outTime, testTime)
	}
}

func testHeaderRoundTrip(fh *FileHeader, wantUncompressedSize uint32, wantUncompressedSize64 uint64, t *testing.T) {
	fi := fh.FileInfo()

   *         .putAll("several", 1, 2, 3)
   *         .putAll("many", 1, 2, 3, 4, 5)
   *         .build();
   * }
   *
   * <p>Builder instances can be reused; it is safe to call {@link #build} multiple times to build
   * multiple multimaps in series. Each multimap contains the key-value mappings in the previously
   * created multimaps.
   *
   * @since 2.0
   */
  @DoNotMock
  public static class Builder<K, V> {

     *
     * <p>This file and jar files from "Class-Path" entry in the scanned manifest files will be
     * added to {@code scannedFiles}.
     *
     * <p>A file will be scanned at most once even if specified multiple times by one or multiple
     * jar files' "Class-Path" manifest entries. Particularly, if a jar file from the "Class-Path"
     * manifest entry is already in {@code scannedFiles}, either because it was scanned earlier, or