}
      sink.flush()
    }
  }

  /**
   * Send a connection-level ping to the peer. `ack` indicates this is a reply. The data in
   * `payload1` and `payload2` opaque binary, and there are no rules on the content.
   */
  @Throws(IOException::class)
  fun ping(
    ack: Boolean,
    payload1: Int,
    payload2: Int,
  ) {
    withLock {
      if (closed) throw IOException("closed")

#### Dict { #dict }

定義 `dict` 時，你需要傳入 2 個以逗號分隔的型別參數。

第一個型別參數是 `dict` 的鍵（key）。

第二個型別參數是 `dict` 的值（value）：

{* ../../docs_src/python_types/tutorial008_py310.py hl[1] *}

這代表：

* 變數 `prices` 是個 `dict`：
    * 這個 `dict` 的鍵是 `str`（例如每個項目的名稱）。
    * 這個 `dict` 的值是 `float`（例如每個項目的價格）。

#### Union { #union }

你可以宣告一個變數可以是「多種型別」中的任一種，例如 `int` 或 `str`。

    Files.copy(
      Paths.get(file(checkstyleConfig).getPath()),
      Paths.get(file(checkstyleIdeConfig).getPath()),
      StandardCopyOption.REPLACE_EXISTING
    )

    // There are some rules that we only want to enable in an IDE. These
    // are extracted to a separate file, and merged into the IDE-specific
    // Checkstyle config.
    Node xmlFragment = parseXml(checkstyleIdeFragment)

// supported on embedded on mobile and embedded platforms and will fail if
// called.
//
// Pass "library_filename" to a platform-specific mechanism for dynamically
// loading a library. The rules for determining the exact location of the
// library are platform-specific and are not documented here.
//
// On success, returns the newly created library handle and places OK in status.
// The caller owns the library handle.

    a.set(0, 1.0);
    Thread t =
        newStartedThread(
            new CheckedRunnable() {
              @Override
              @SuppressWarnings("ThreadPriorityCheck") // doing our best to test for races
              public void realRun() {
                while (!a.compareAndSet(0, 2.0, 3.0)) {
                  Thread.yield();
                }
              }
            });

 * well as a simple framework for helping to make sure that assertions failing in generated threads
 * cause the associated test that generated them to itself fail (which JUnit does not otherwise
 * arrange). The rules for creating such tests are:
 *
 * <ol>
 *   <li>All assertions in code running in generated threads must use the forms {@link
 *       #threadUnexpectedException} or {@link #threadRecordFailure} (which is called by {@link

	// simplicity it avoids the conversion entirely for relative
	// paths or paths containing .. elements. For now,
	// \\server\share paths are not converted to
	// \\?\UNC\server\share paths because the rules for doing so
	// are less well-specified.
	if len(path) >= 2 && path[:2] == `\\` {
		// Don't canonicalize UNC paths.
		return path
	}
	if !filepath.IsAbs(path) {
		// Relative path
		return path
	}

import org.dbflute.optional.OptionalEntity;

/**
 * Manages a dictionary file for stemmer overrides.
 * This class handles reading, parsing, and updating files that contain
 * stemmer override rules, where each rule maps an input word to an
 * output stem. The file format is expected to be `input => output`.
 *
 * The class provides methods for retrieving, adding, updating, and

## To `async` or not to `async` { #to-async-or-not-to-async }

As dependencies will also be called by **FastAPI** (the same as your *path operation functions*), the same rules apply while defining your functions.

You can use `async def` or normal `def`.

  transient volatile Cell @Nullable [] cells;

  /**
   * Base value, used mainly when there is no contention, but also as a fallback during table
   * initialization races. Updated via CAS.
   */
  transient volatile long base;

  /** Spinlock (locked via CAS) used when resizing and/or creating Cells. */
  transient volatile int busy;

  /** Package-private default constructor */