fun fetch() =
        fetchLatestAgpVersions().let { fetchedVersions ->
            updateProperties(fetchedVersions)
            updateCompatibilityDoc(fetchedVersions.latests)
        }

    private
    data class FetchedVersions(
        val latests: List<String>,
        val nightlyBuildId: String,
        val nightlyVersion: String,
        val aapt2Versions: List<String>,
        val buildToolsVersion: String
    )

   * much faster to initialize than [BasicTrustRootIndex] because it doesn't need to load and
   * index trusted CA certificates.
   */
  internal data class CustomTrustRootIndex(
    private val trustManager: X509TrustManager,
    private val findByIssuerAndSignatureMethod: Method,
  ) : TrustRootIndex {

   *
   * The two values are independent: results can contain both (recoverable error), neither
   * (success), just an exception (permanent failure), or just a plan (non-exceptional retry).
   */
  data class ConnectResult(
    val plan: Plan,
    val nextPlan: Plan? = null,
    val throwable: Throwable? = null,
  ) {
    val isSuccess: Boolean
      get() = nextPlan == null && throwable == null
  }

/**
 * A non-blocking queue which automatically evicts elements from the head of the queue when
 * attempting to add new elements onto the queue and it is full. This queue orders elements FIFO
 * (first-in-first-out). This data structure is logically equivalent to a circular buffer (i.e.,
 * cyclic buffer or ring buffer).
 *
 * <p>An evicting queue must be configured with a maximum size. Each time an element is added to a

        serverData.security = 0; // Set to 0 or appropriate value for SECURITY_SHARE
        serverData.encryptionKey = new byte[8]; // Initialize with empty encryption key

        // Configure the mock transport with the server data
        transport.server = serverData;

        smbtStatic = mockStatic(SmbTransport.class);
        smbtStatic.when(() -> SmbTransport.getSmbTransport(addr, 445, inet, 0, null)).thenReturn(transport);

但如果你把同一個模型用作輸出，如下所示：

{* ../../docs_src/separate_openapi_schemas/tutorial001_py310.py hl[19] *}

...由於 `description` 有預設值，就算你沒有為該欄位回傳任何內容，它仍會有那個預設值。

### 輸出回應資料的模型 { #model-for-output-response-data }

在互動式文件中試用並檢視回應時，儘管程式碼沒有為其中一個 `description` 欄位加入任何內容，JSON 回應仍包含預設值（`null`）：

<div class="screenshot">
<img src="/img/tutorial/separate-openapi-schemas/image02.png">
</div>

但如果你把同一个模型用作输出，例如：

{* ../../docs_src/separate_openapi_schemas/tutorial001_py310.py hl[19] *}

...那么因为 `description` 有默认值，即使你**不返回该字段**，它仍然会有这个**默认值**。

### 输出响应数据的模型 { #model-for-output-response-data }

如果你在文档中交互并查看响应，即使代码没有给某个 `description` 字段赋值，JSON 响应中仍包含默认值（`null`）：

<div class="screenshot">
<img src="/img/tutorial/separate-openapi-schemas/image02.png">
</div>

             * array. Incedentally when these andx smbs are created they are not
             * necessarily populated with header data because they're not writing
             * the header, only their body. But for whatever reason one might wish
             * to populate fields if the writeXxx operation needs this header data
             * for whatever reason. I copy over the uid here so it appears correct

```python
from typing import Any


def some_function(data: Any):
    print(data)
```

### Tipos genéricos { #generic-types }

Algunos tipos pueden tomar "parámetros de tipo" entre corchetes, para definir sus tipos internos, por ejemplo una "lista de strings" se declararía `list[str]`.

```python
from typing import Any


def some_function(data: Any):
    print(data)
```

### Tipos genéricos { #generic-types }