assertOutputContains(
            getGradleRunner().withArguments("noConfigAfterExecution", "-s", "-i").buildAndFail().getOutput(),
            "buildResources can't be configured after the task ran"
        );
    }

**FastAPI** 會為你建立 `BackgroundTasks` 物件，並以該參數傳入。

## 建立任務函式 { #create-a-task-function }

建立一個作為背景任務執行的函式。

它只是個可接收參數的一般函式。

它可以是 `async def`，也可以是一般的 `def`，**FastAPI** 都能正確處理。

在此例中，任務函式會寫入檔案（模擬寄送電子郵件）。

由於寫入操作未使用 `async` 與 `await`，因此以一般的 `def` 定義該函式：

{* ../../docs_src/background_tasks/tutorial001_py310.py hl[6:9] *}

## 新增背景任務 { #add-the-background-task }

在路徑操作函式內，使用 `.add_task()` 將任務函式加入背景任務物件：

        return false;
    }

    // ===================================================================================
    //                                                                     Birthplace Mark
    //                                                                     ===============
    @Override
    public void markAsSelect() {
        __createdBySelect = true;
    }

    @Override

  private val sinkBuffer: Buffer = sink.buffer
  private var writerClosed = false

  /** Lazily initialized on first use. */
  private var messageDeflater: MessageDeflater? = null

  // Masks are only a concern for client writers.
  private val maskKey: ByteArray? = if (isClient) ByteArray(4) else null
  private val maskCursor: Buffer.UnsafeCursor? = if (isClient) Buffer.UnsafeCursor() else null

            .from(configs.stream().filter(ResolveAllDependencies::canBeResolved).collect(Collectors.toList()));
    }

    @TaskAction
    void resolveAll() {
        // do nothing, dependencies are resolved when snapshotting task inputs
    }

    private static boolean canBeResolved(Configuration configuration) {
        if (configuration.isCanBeResolved() == false) {
            return false;
        }

router_b.include_router(router=router_c, prefix="/c")
router_a.include_router(router=router_b, prefix="/b")
app.include_router(router=router_a, prefix="/a")


client = TestClient(app)


@pytest.mark.parametrize(
    "path,expected_status,expected_response",
    [
        ("/a", 200, {"msg": "A"}),
        ("/a/b", 200, {"msg": "B"}),
        ("/a/b/c", 200, {"msg": "C"}),
    ],
)

            len++;
            if (len > maxLen) {
                throw new RuntimeCIFSException("zero termination not found");
            }
        }
        return len;
    }

    /**
     * Masks sensitive values in a string for security purposes.
     *
     * @param value the string potentially containing sensitive information

        // Test with timeout set
        execJob.timeout = 10;
        execJob.sessionId = "test-session";
        TimeoutTask task = execJob.testCreateTimeoutTask();
        assertNotNull(task);

        // Clean up timeout task
        task.cancel();
    }

    // Test createSystemProperties method
    @Test
    public void test_createSystemProperties() throws IOException {

  Lockable {
  private val key: String

  /** Non-null for client web sockets. These can be canceled. */
  internal var call: Call? = null

  /** This task processes the outgoing queues. Call [runWriter] to after enqueueing. */
  private var writerTask: Task? = null

  /** Null until this web socket is connected. Only accessed by the reader thread. */
  private var reader: WebSocketReader? = null

    }

    public PluginDescriptor build(ReaderSupplier readerSupplier, String source) throws PlexusConfigurationException {
        try (BufferedReader br = new BufferedReader(readerSupplier.open(), BUFFER_SIZE)) {
            br.mark(BUFFER_SIZE);
            XMLStreamReader xsr = XMLInputFactory.newFactory().createXMLStreamReader(br);
            xsr.nextTag();
            String nsUri = xsr.getNamespaceURI();