static <K, V> ImmutableMap<K, V> asImmutable(Map<K, V> map) {
    for (Entry<K, V> entry : checkNotNull(map).entrySet()) {
      checkNotNull(entry.getKey());
      checkNotNull(entry.getValue());
    }
    return new ImmutableEnumMap<K, V>(map);
  }

  private ImmutableEnumMap(Map<? extends K, ? extends V> delegate) {
    super(delegate);
  }

     **/
    ToolchainPrivate createToolchain(ToolchainModel model) throws MisconfiguredToolchainException;

    /**
     * Returns the default instance of the particular type of toolchain, can return <code>null</code>
     * if not applicable.
     * TODO keep around??
     **/
    ToolchainPrivate createDefaultToolchain();

        this.propertyContributors = propertyContributors;
    }

    public Map<String, PropertyContributor> getPropertyContributors() {
        return propertyContributors;
    }

        String cleartext = context.reader.readLine("Enter the password to encrypt: ", '*');
        context.terminal.writer().println(secDispatcher.encrypt(cleartext, null));
        return OK;
    }

        }
    }

    @Override
    public TokenStream create(final TokenStream tokenStream) {
        final PartOfSpeechAttribute posAtt = tokenStream.addAttribute(PartOfSpeechAttribute.class);
        return new PosConcatenationFilter(tokenStream, posTags, () -> posAtt.getPartOfSpeech());
    }

    @Inject
    private ArtifactInstaller artifactInstaller;

    @Inject
    private SessionScope sessionScope;

    protected String component() {
        return "installer";
    }

    @Test
    void testArtifactInstallation() throws Exception {
        sessionScope.enter();
        try {
            sessionScope.seed(MavenSession.class, mock(MavenSession.class));

    x: Annotated[float, Query(allow_inf_nan=True)] = 0,
    y: Annotated[float, Query(allow_inf_nan=False)] = 0,
    z: Annotated[float, Query()] = 0,
    b: Annotated[float, Body(allow_inf_nan=False)] = 0,
) -> str:
    return "OK"


client = TestClient(app)


@pytest.mark.parametrize(
    "value,code",
    [
        ("-1", 200),
        ("inf", 200),
        ("-inf", 200),
        ("nan", 200),
        ("0", 200),

    // yet started execution.
    synchronized (lock) {
      if (!executed) {
        runnables = new RunnableExecutorPair(runnable, executor, runnables);
        return;
      }
    }
    // Execute the runnable immediately. Because of scheduling this may end up getting called before
    // some of the previously added runnables, but we're OK with that. If we want to change the

   * message otherwise.
   *
   * @return {@code reference}, guaranteed to be non-null, for convenience
   * @throws VerifyException if {@code reference} is {@code null}
   * @see Preconditions#checkNotNull Preconditions.checkNotNull()
   */
  @CanIgnoreReturnValue
  public static <T> T verifyNotNull(@Nullable T reference) {
    return verifyNotNull(reference, "expected a non-null reference");
  }

# 使用 yield 的相依 { #dependencies-with-yield }

FastAPI 支援在完成後執行一些<dfn title="有時也稱為「結束程式碼」、「清理程式碼」、「釋放程式碼」、「關閉程式碼」、「情境管理器結束程式碼」等">額外步驟</dfn>的相依。

要做到這點，使用 `yield` 取代 `return`，並把額外步驟（程式碼）寫在其後。

/// tip

請確保每個相依內只使用一次 `yield`。

///

/// note | 技術細節

任何可用於下列裝飾器的函式：

* [`@contextlib.contextmanager`](https://docs.python.org/3/library/contextlib.html#contextlib.contextmanager) 或