"""
        if self.cid is not None:
            fetcher = self._create_credentials_fetcher()
            return RefreshableCredentials.create_from_metadata(
                metadata=fetcher(),
                refresh_using=fetcher,
                method=self.METHOD,
            )
        else:
            return None

    def _create_credentials_fetcher(self):
        method = self.METHOD

/**
 * Common interface for all SMB message blocks in the jCIFS protocol implementation.
 * Provides core functionality for encoding/decoding SMB messages, handling message signing,
 * and managing message metadata such as IDs, commands, and authentication information.
 *
 * @author mbechler
 */
public interface CommonServerMessageBlock extends Message {

    /**
     * Decode message data from the given byte array
     *

            }
            final String pluginUrl = url + (url.endsWith("/") ? name + "/" : "/" + name + "/");
            try {
                final String pluginMetaContent = getRepositoryContent(pluginUrl + "maven-metadata.xml");
                try (final InputStream is = new ByteArrayInputStream(pluginMetaContent.getBytes(Constants.UTF_8_CHARSET))) {
                    final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

import jakarta.validation.constraints.Size;

/**
 * Form class for editing crawling information in the admin interface.
 * This form handles the editing of crawling session data, which tracks
 * the status and metadata of web crawling operations.
 *
 */
public class EditForm {

    /**
     * Creates a new EditForm instance.
     */
    public EditForm() {
        // Default constructor
    }

    /**

# 查詢參數模型

如果你有一組具有相關性的**查詢參數**，你可以建立一個 **Pydantic 模型**來聲明它們。

這將允許你在**多個地方**去**重複使用模型**，並且一次性為所有參數聲明驗證和元資料 (metadata)。😎

/// note

FastAPI 從 `0.115.0` 版本開始支援這個特性。🤓

///

## 使用 Pydantic 模型的查詢參數

在一個 **Pydantic 模型**中聲明你需要的**查詢參數**，然後將參數聲明為 `Query`：

{* ../../docs_src/query_param_models/tutorial001_an_py310.py hl[9:13,17] *}

**FastAPI** 將會從請求的**查詢參數**中**提取**出**每個欄位**的資料，並將其提供給你定義的 Pydantic 模型。

## 查看文件

				false, r, cred, owner)
			if apiErr == ErrAccessDenied {
				return errAuthentication
			}
			return nil
		}
		return nil
	} // No pre-existing retention metadata present.

	apiErr := isPutRetentionAllowed(oi.Bucket, oi.Name,
		days, objRetention.RetainUntilDate.Time,
		objRetention.Mode, byPassSet, r, cred, owner)
	if apiErr == ErrAccessDenied {
		return errAuthentication

		st.Versioning = madmin.MetaStatus{IsSet: true, Err: errMsg}
	default:
		st.Err = errMsg
	}
	i.Buckets[bucket] = st
}

// ImportBucketMetadataHandler - imports all bucket metadata from a zipped file and overwrite bucket metadata config
// There are some caveats regarding the following:
// 1. object lock config - object lock should have been specified at time of bucket creation. Only default retention settings are imported here.

Check how deprecated and non-deprecated *path operations* look like:

<img src="/img/tutorial/path-operation-configuration/image05.png">

## Recap { #recap }

/// tip | Tipp

Mit derselben Technik können Sie das JSON-Schema erweitern und Ihre eigenen benutzerdefinierten Zusatzinformationen hinzufügen.

Sie könnten das beispielsweise verwenden, um Metadaten für eine Frontend-Benutzeroberfläche usw. hinzuzufügen.

///

/// info | Info

OpenAPI 3.1.0 (verwendet seit FastAPI 0.99.0) hat Unterstützung für `examples` hinzugefügt, was Teil des **JSON Schema** Standards ist.

	objAPI, disks, err := prepareErasure(t.Context(), 8)
	if err != nil {
		t.Fatalf("Failed to initialize object layer: %v", err)
	}
	defer removeRoots(disks)
	setObjectLayer(objAPI)

	// Prepare bucket metadata
	globalBucketMetadataSys = NewBucketMetadataSys()
	globalBucketObjectLockSys = &BucketObjectLockSys{}
	globalBucketVersioningSys = &BucketVersioningSys{}

	lcXML := `
<LifecycleConfiguration>
       <Rule>