block.uid = 0x1234;
        block.useUnicode = true;

        byte[] buf = new byte[256];
        int n = block.writeAndXWireFormat(buf, 0);

        assertTrue(n > 0);
        // Note: In actual implementation, uid is NOT propagated for non-AndX SMBs
        // uid is only set for AndXServerMessageBlock instances (line 167 in AndXServerMessageBlock.java)

<div class="termy">

```console
$ uvicorn main:app --host 0.0.0.0 --port 80

<span style="color: green;">INFO</span>:     Uvicorn running on http://0.0.0.0:80 (Press CTRL+C to quit)
```

</div>

/// note | 注意

命令 `uvicorn main:app` 的含义如下：

* `main`：指的是 `main.py` 文件（即 Python “模块”）。
* `app`：指的是 `main.py` 文件中通过 `app = FastAPI()` 创建的对象。

它等价于以下导入语句：

```Python
from main import app
```

函数参数按如下规则进行识别：

* 如果该参数也在**路径**中声明了，它就是路径参数。
* 如果该参数是（`int`、`float`、`str`、`bool` 等）**单一类型**，它会被当作**查询**参数。
* 如果该参数的类型声明为 **Pydantic 模型**，它会被当作请求**体**。

/// note | 注意

FastAPI 会根据默认值 `= None` 知道 `q` 的值不是必填的。

`str | None` 并不是 FastAPI 用来判断是否必填的依据；是否必填由是否有默认值 `= None` 决定。

但添加这些类型注解可以让你的编辑器提供更好的支持并检测错误。

///

## 不使用 Pydantic { #without-pydantic }

```sh
export MINIO_KMS_SECRET_KEY=my-minio-key:OSMM+vkKUTCvQs9YL/CVMIMt43HFhkUpqJxTmGl6rYw=
```

> You can choose an arbitrary name for the key - instead of `my-minio-key`.
> Please note that losing the `MINIO_KMS_SECRET_KEY` will cause data loss
> since you will not be able to decrypt the IAM/configuration data anymore.

        String message = "SSO complex failure";
        IllegalStateException innerException = new IllegalStateException("Invalid state");
        OutOfMemoryError middleError = new OutOfMemoryError("Memory exhausted");
        // Note: OutOfMemoryError constructor doesn't accept cause, so we create a wrapper
        RuntimeException outerException = new RuntimeException("Wrapper", middleError);

        }
    }

    @Test
    public void test_scroll_callbackHandling() {
        // This test verifies the scroll method exists and handles callbacks properly
        // Note: In a real test environment, this would require proper SearchEngineClient setup
        // For now, we test that the method signature is correct and can be called

        AtomicInteger callbackCount = new AtomicInteger(0);

            }
        }

        try {
            // Create SmbFile with cached attributes
            SmbFile file = new SmbFile(filePath, context);
            // Note: We would need to add a method to SmbFile to set cached attributes
            // For now, just return the file object
            return file;
        } catch (Exception e) {

        repo = new LocalRepository(
                new File(delegate.getBasedir()),
                (layout != null) ? layout.getClass().getSimpleName() : "legacy");

        /*
         * NOTE: "invoker:install" vs "appassembler:assemble": Both mojos use the artifact installer to put an artifact
         * into a repository. In the first case, the result needs to be a proper local repository that one can use for

### 模拟文件 { #simulate-a-file }

在这个示例中，我们用 `io.BytesIO` 模拟了一个文件，它是只驻留在内存中的类文件对象，但提供相同的接口。

例如，我们可以像对文件那样迭代它来消费其内容。

{* ../../docs_src/stream_data/tutorial002_py310.py ln[1:27] hl[3,12:13,25] *}

/// note | 技术细节

另外两个变量 `image_base64` 和 `binary_image` 表示一张图像，先用 Base64 编码，再转换为 bytes，最后传给 `io.BytesIO`。

只是为了让它们能和示例放在同一个文件里，便于你直接复制运行。🥚

///

通过使用 `with` 代码块，我们确保在生成器函数（带有 `yield` 的函数）完成后关闭这个类文件对象。也就是在发送完响应之后。

        assertNull(sambaHelper.getAccountId(createMockSID(7, "Invalid Account")));
    }

    @Test
    public void test_getAccountId_smb1_basic() throws SmbException {
        // Note: SMB1 SID testing is limited due to interface constraints
        // This test verifies the method exists and handles the SMB1 SID parameter type
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {