該 dataclass 會自動轉換為 Pydantic 的 dataclass。

如此一來，其結構描述（schema）會顯示在 API 文件介面中：

<img src="/img/tutorial/dataclasses/image01.png">

## 巢狀資料結構中的 Dataclasses { #dataclasses-in-nested-data-structures }

你也可以將 `dataclasses` 與其他型別註記結合，建立巢狀的資料結構。

在某些情況下，你可能仍需要使用 Pydantic 版本的 `dataclasses`。例如，當自動產生的 API 文件出現錯誤時。

這種情況下，你可以把標準的 `dataclasses` 直接換成 `pydantic.dataclasses`，它是可直接替換（drop-in replacement）的：

```console
$ <font color="#4E9A06">fastapi</font> run <u style="text-decoration-style:solid">main.py</u>
<span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting server
        Searching for package file structure
```

... et un autre exemple de code console ...

```console
// Créer un répertoire "Code"
$ mkdir code
// Aller dans ce répertoire
$ cd code
```

... et un exemple de code Python ...

     * initial thread's.
     */
    Set<Throwable> seenExceptionsLocal = seenExceptionsField;
    if (seenExceptionsLocal == null) {
      // TODO(cpovirk): Should we use a simpler (presumably cheaper) data structure?
      /*
       * Using weak references here could let us release exceptions earlier, but:
       *
       * 1. On Android, querying a WeakReference blocks if the GC is doing an otherwise-concurrent
       * pass.

import jcifs.dcerpc.ndr.NdrBuffer;
import jcifs.dcerpc.ndr.NdrException;

/**
 * Comprehensive test suite for RPC data structures
 * Tests encoding/decoding of UUID, Policy Handle, Unicode String, and SID types
 */
@ExtendWith(MockitoExtension.class)
@DisplayName("RPC Data Structures Test Suite")
class rpcTest {

    @Mock
    private NdrBuffer mockNdrBuffer;

    @Mock
    private NdrBuffer mockDeferredBuffer;

 * href="http://portal.acm.org/citation.cfm?id=6621">min-max heap</a> developed by Atkinson, et al.
 * Unlike many other double-ended priority queues, it stores elements in a single array, as compact
 * as the traditional heap data structure used in {@link PriorityQueue}.
 *
 * <p>This class is not thread-safe, and does not accept null elements.
 *
 * <p><i>Performance notes:</i>
 *
 * <ul>

            throw new GsaConfigException("Failed to parse XML file.", e);
        }
    }

    /**
     * SAX event handler called at the beginning of document parsing.
     * Initializes internal data structures for processing the GSA configuration.
     *
     * @throws SAXException if a SAX error occurs during initialization
     */
    @Override
    public void startDocument() throws SAXException {

            }
        };
        ComponentUtil.register(mockConfig, "fessConfig");

        // Note: Full testing requires a running OpenSearch cluster
        // These tests verify the PingResponse class structure is correct
        assertTrue(true);
    }

    @Test
    public void test_getClusterName_returnsCorrectValue() {
        // Test cluster name getter exists

 */
public abstract class DcerpcMessage extends NdrObject implements DcerpcConstants {

    /**
     * Default constructor for DcerpcMessage.
     * Initializes the DCE/RPC message structure for SMB1 protocol.
     */
    protected DcerpcMessage() {
        // Default constructor
    }

    /**
     * The packet type of this DCERPC message
     */
    protected int ptype = -1;
    /**

- Retrying a failed job automatically driven by user input
- Monitoring job progress in real-time
- Send notifications upon completion or failure to user configured target

Following YAML describes the structure of a replication job, each value is documented and self-describing.

```yaml
replicate:
  apiVersion: v1
  # source of the objects to be replicated
  source:
	type: TYPE # valid values are "minio"
	bucket: BUCKET

  <span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting production server 🚀

             Searching for package file structure from directories
             with <font color="#3465A4">__init__.py</font> files
             Importing from <font color="#75507B">/home/user/code/</font><font color="#AD7FA8">awesomeapp</font>